Wondering how to dye jeans darker? I mentioned in passing that I had successfully dyed a new pair of jeans indigo blue and I received a lot of questions about how to dye jeans darker. I wore that pair of DIY dyed jeans for almost a year and was so impressed with the results! I recently dyed another pair and decided that this time I’d share a “before” and “after,” along with answering some FAQ about dyeing jeans and show everyone how to dye jeans darker – it’s easy, I promise.
I have been on a weight loss journey since the fall and have lost 25 pounds (and a couple of pant sizes). I am trying to lose 25 more, so I have been hesitant to spent money on pants – although I need them! My old jeans have become insanely baggy and frequently droop, pulling my underwear down with them. Pant shopping isn’t easy though because I don’t like when jeans have any whiskering or fading on the front/back of the thighs. I prefer a simple dark wash but, alas, jeans that fit me aren’t the wash I like and the jeans with the wash I like are usually uncooperative and won’t zip up. Not a problem! I found inexpensive, comfy, skinny jeans at Winner’s for only $25 and turned them into a perfect dark wash. Here’s a look at the original finish:
And here’s a look at them now:
In this photo, the colour seems lighter than real life and doesn’t appear 100% uniform, but they are perfectly uniform and a lovely dark wash now. I’m so thrilled with how they look and I’m going to show you all how to dye jeans darker at home!
How to Dye Jeans Darker at Home:
If you’re read any of my DIY dye posts, you know that the procedure is really simple and not scary at all – especially if you dye in the washing machine. Here’s the how-to:
- Completely soak the denim (or give them a pre-dye wash if they’re new EDIT: this can help remove sizing on clothing)
- Fill the washing machine (or a large basin) with hot water
- Add a cup of salt and fully dissolve
- Pour in one bottle of Rit Dye Black and another bottle of Rit Dye Navy Blue
- Agitate for 30-40 minutes (either re-setting the machine or doing it by hand)
- Rinse and let dry (I line dry to preserve the colour)
- Run the machine through with bleach to remove dye
And now, the Jean Dyeing FAQ (if you have any Q’s about how to dye jeans darker, just drop them in the comments!)
Did the dye cover the denim evenly?
Yes! All of the whiskering and fading was covered on both pairs I’ve dyed, and the result was a uniform hue.
What dye formula did I use?
The first time I dyed jeans, I used two bottles of black and one bottle of navy. The result was very inky – I loved it, but it did add to the cost because three bottles was about $12. This time I used only two bottles and did a 1:1 ratio of navy and black, which resulted in a dark denim blue. I love the shade and it looks great. Because these jeans are temporary, I wanted to keep the cost low so I didn’t want to purchase three bottle, but if I’m being honest, I preferred the 2:1 (black to navy) ratio because the jeans were really dark – almost black, but with some depth. I’d call the result a midnight blue.
How much dye do I need?
I used two bottles for one pair of pants and was happy with the results. The Rit Dye instructions indicate that one bottle covers 1 pound of clothing, but suggests using more for darker/brighter colours.
Will any colour work?
You can dye denim with any colour but I find that the black/navy combo looks most like a commercial “dark wash” denim. But you could turn white jeans into teal (do it!) or go for all-black. Rit Dye even makes a “denim blue” that might be great on its own. It’s a bit of a gamble, though, how dye will look when applied over an already dyed fabric.
Did the dye cover the stitching as well?
No. The stitching remained light, so they don’t look like they were given at at-home dye bath. This happened with the dress I dyed as well.
Did it wash out quickly?
No! I was surprised! I never had to re-dye the first pair of jeans I dyed and I washed them once or twice a week (no dryer, though). They faded a bit, but the whiskering didn’t come back and they were still a dark wash – they just looked like broken in jeans. I was really impressed – my dyed dress has barely faded, if at all (although I don’t wear that nearly as often as jeans).
How can I make the colour last longer?
I find that washing my jeans inside out, on cold (preferably using a detergent meant for dark colours), and skipping the dryer helps preserve the colour of dark clothing, whether I’ve dyed it or bought it that way. Line drying dark items (out of the sun) really helps keep their colour longer than simply tossing them in the dryer – that’s probably the best colour-saving tip I have up my sleeves.
Did the colour rub off on furniture?
No! The dye stays put once the jeans were dry. After the initial dye, while they were line drying, they deposited dye on anything they touched while wet (like the wall and the lid to the washing machine – crap). This contact stained, although with scrubbing I got 95% of it off. But once the denim was dried, and especially after the first wash, there was absolutely no transfer, which was interesting because I’ve experienced colour transfer with commercially dyed indigo jeans.
Did the jeans feel stiff?
Briefly. Any time I dye something, I notice that it feels a bit stiffer when it’s first dyed. But after it’s ironed or worn, it immediately softens and the fabric feels completely normal again.
Will it wreck my machine?
Nope! BUT, you have to run the machine empty, with bleach, immediately after dyeing to remove any dye from the machine (otherwise it can stain the drum and plastic pieces). I usually use this bleach load to wash my floor rags and scungies because I hate wasting water.
Am I missing any questions about how to dye jeans darker? I’ve also used this process to re-dye my comfiest pants/jeans once they’ve become faded from wear. However, I find that dye always “sticks” best to clothing that hasn’t been worn. So, while my brand new jeans took the dye well and stayed dark, my old and faded pants were only temporarily revived by dye as it seemed to fade more quickly from the beat up pants. But I will definitely keep dyeing jeans because it makes it so much easier to find the perfect fit when I no longer have to be concerned about the wash.
I don't use it often but I have to agree that Rit dye is a great tool. I have even used it in the bathtub to dye slip covers and it worked great even on such a big job. Never thought to use it to refresh my jeans though. All mine end up fading in the knees so this mix might give them a little more life.
Wow – I've never tackled something as large as a slip cover! It's so good to hear that it works even on such a large application. Maybe one day I'll be brave enough, lol.
Holy crap! You are the cutest thing ever just as you are, but 25 lbs is an incredible accomplishment! Especially in such a short amount of time! Even though you are a complete stranger, I am proud of you! Weight loss is never easy, but it's particularly tough when the temps drop and the most entertaining thing to do with your time is snuggle up and eat delicious foods. You are a total badass.
Awww, thanks 🙂 I packed on weight very quickly this spring/summer due to lots of stress eating, so at first I just wanted to loose the pounds I gained, but I've been trying to loose weight for years so now that I have momentum I decided to keep going. I fell off the wagon a bit during the holidays, but I enjoyed it, lol.
This is great. I have thought about doing this but I was definitely concerned about wrecking my washing machine. Thanks for the tutorial!
That is the beauty of always living in a house with crummy old machines, lol. Just make sure you run it through with bleach as soon as you're done and be generous with the bleach and water levels (fill the machine). i think I used half a jug of bleach!
Do you wash your jeans separately after dyeing them? Inside out? I love dyeing stuff, especially prints as the results are generally a surprise. It's a great way to tone something down that seems a bit too loud – but then, I lean towards the dark and smudgy.
I was them with darks, inside out most often (sometimes I forget). No dryer – that seems to fade my clothes faster than washing. I turned a printed dress a bit smudgier too, but only tried it the once. I agree, the unexpected results can be fun!
Thanks for sharing this. It's a great jeans tutorial, but then all your dye tutorials are great! As an FYI, we have a dye fixative you can use after dyeing your jeans but before they're rinsed to make the color last even longer–it reduces the amount of bleeding. It's great for cotton fabrics. Lots of info on how to use it in our techniques on our site. And the thread doesn't dye because it's usually made of polyester and our core dye line doesn't dye polyester (though our new DyeMore one does!).
That's a great tip! I've never seen the dye fixative at my Michael's location, but I'll ask for it next time I'm dyeing something! I was able to dye a polyester dress with your core dye, but I added vinegar. It was a little lighter than expected, but still did the job – I was impressed! I'm going to try the DyeMore next time!
I did this recently and found about 2/3 bottle of each was enough. I wonder if certain jeans may need to be rinsed more than once after dying/before wearing? I rinsed my hand before I gave up and then had to put them in the washer 3 x's before the water was clear. Plus now I can wash them with other darks and no dye comes out onto the other clothes.
I've dyed two new pairs and four old pairs and haven't had to rinse them more than once. But they did transfer dye when wet right after dyeing. No problems after that, though. Were your jeans transferring colour to other clothes in the wash?
Oooh! Thanks for this! I've tried dye-ing jeans before but was never happy with the results, but now you've shared the secret.
Happy I can help! What was the problem when you dyed jeans?
I just used plain old dark blue dye and they looked like I dyed them myself – not a good darkwash color. If you like dye-ing, I really like to use Procion MX dyes. They are a little more fiddly (you need lots of salt + soda ash) than good old RIT, but they are super colorfast and come in all kinds of luscious colors. Now if I can just figure out how to machine dye in my new HE topload washing machine, I'll be all set.
Ahhh, that's good to know – I've never used just the plain navy or "denim" blue Rit sells. I think the secret might be the added black, for some depth and richness. I'll definitely look into that Procion Dye, thanks for the tip! I've never used fancy new machines – I've only ever had really ancient washing machines. Dyeing things easily is my consolation prize, lol. Good luck with your new machine!
Hi Tanya, wish you a happy new year! This is actually unrelated, but I love your home so much. I always go back and see your photos. The aqua and your husband's grandfather's paintings are my favorite parts! I am actually planning a living room makeover, with navy and other shades of blue and a bit of green-yellow, and looking at some of your pictures has convinced me that shades of blue are indeed my favorite color. There is nothing like the calming qualities of blue. And I also wanted to say, I think your home is incredibly calming. It is so colorful, but it is extremely calming. I guess it is because of the blue. ok, in short, I love your home if I wasn't clear enough. lol
Thanks so much!! I find blues so calming too. I'm at peace as soon as I walk in the door. Good luck with your living room makeover, I can't wait to see it on Instagram!
Great idea! I love dark wash or black jeans, but whenever I got shopping I can only find light wash in my size (and I hate spending money). I'm definitely going to have to try my hand at dyeing some things. Ps. Congrats on your weight loss!
Thanks Haley! Isn't that the way it goes? Knowing that I can dye jeans myself has made it so much easier to shop for pants. If you like a really dark wash, do the 2:1 ration of black to navy – it will be inkier and I think you'll really like it.
This is great. I am currently in the market for new jeans- looking for another pair of skinny jeans for tall boots. I'm new to this cut and the search is painful but until you posted this, wash colour was just another requirement making my search all the more difficult. It looks like this works remarkably well.Good for you and your fitness achievement- keep riding that success train to your end goal! Very impressive!And thanks for all the tips In the faq section- I think a long overdue dip dye project is a great January project. My procrastination on this may see me finish my dip dye throw just as the trend leaves the building- haha
I hear you! I only just started wearing skinny jeans this fall and it seems like it's so much harder to find a good fit because they are cut so snugly. I'm excited you're going to try dip dyeing – it's so much fun. If you wait long enough, trends circle back again anyway, lol.
Did the inside of the jeans turn dark blue as well?
Yes, the dye thoroughly covers the jeans, inside and out. But in my experience, the dye did not rub off on my skin (if that's what you're curious about).
I want to re dye my favourite black stretch jeans, wont the hot water affect the stretch in the fabric, can I dye them on a lower temp for longer??
That's a good question! The jeans I've dyed have all had a lot of stretch and I don't think it affected them. I have dyed new and old pants and haven't noticed a difference in fit immediately after dyeing. BUT I have been losing weight since the fall so they've been getting bigger and perhaps that has distracted me from any breakdown in the stretch material which might have occurred from the hot dye bath. According to an e-How article, cold water will work but could result in a less saturated dye bath:http://www.ehow.com/how_8658544_use-cold-water-rit-dye.htmlHowever, you don't need to use Rit Dye for this – it's just what's readily available. If the jeans are really special and cost a bit, you might want to invest in a better quality dye and once you start shopping for more professional-grade dyes, you can find ones designed for cold water. Here's a link to one that looks good and they have a black dye:http://prociondye.com/I hope this helps you safely dye your favorite jeans! Good luck (I'd love to hear your experience).
I did an old faded jean jacket and it came out great! The only thing I would say… it came out a bit darker than I really wanted (more toward black than navy blue) so I should probably have used 1 bottle navy and 1/2 bottle black. But I think after I wash it a few times it might be right. I have a front-loading HE machine, so I used a bucket. I was careful to keep it submerged and move it around frequently to make sure the fabric wasn't staying creased in the same spot (so it wouldn't get a tie-dye effect.) After 35 minutes, I (slowly!) poured out the dye into the sink, and refilled the bucket with cold water and 1 cup vinegar to set the dye. I let that soak about 10 minutes, then rinsed with cold water until it was running pretty clear. Then I transferred to the washer and washed with another cup of vinegar. Then I washed again with detergent and dried. Came out great for $6!
So happy to hear your jacket turned out! My jeans lightened a smidge with wash, so hopefully your jacket will be perfect.
Can you wash the jeans with other clothes and be sure that the colour won't run and affect the other garments?
I wash them the way I wash store bought dark wash jeans: inside out, in cold, with other dark colors. I've never noticed dye transfer, but I wouldn't toss them in with a white blouse or anything.
So glad I stumbled upon this tutorial! Exactly what I was looking for! I want to dye 3 or 4 pairs of jeans. Can I dye them altogether? If so, should i just multiply the quantity of dye and salt? Thanks!
Happy I could help! I've done bigger batches and, yes, I just added more dye, water and salt. Most bottles/brands will say how many garments one bottle with cover, in case you're not using Rit.
Do you dye your jeans inside out too?
Right side out but they dyed all the way through.
I just tried this and it's amazing. I had boight a pair of levis that were in clearance. The color wasn't so great they were that worn look in the front that looks kind of yellow. Now they are great dark jeans. Totally awesome and the threads did not dye. I have a new pair. 🙂
Yay!! So happy this worked out for you and that you scored a great pair of jeans. Thanks for taking the time to leave a comment, I love hearing from people who try my tutorial 🙂
Hi Tanya, I've got a pair of bright red jeans that I'd like to darken to a more subdued, dark red. Could I use your technique perhaps with just one bottle of black dye? Would that work?
I worry black would make it a muddy grey. It could even come out some random color. I'd try a deeper red dye. If you look on amazon for fabric dyes there are some more professional dyes that come in wider range of colours than Michaels craft stuff. Dharma trading co supplies great dyes for crafters. I'd choose a rich dark red but remember that dye, even on white, is always a gamble to be prepared for a surprise. Don't dye anything irreplaceable! If you still don't love the red try mixing a bit of brown. But honestly I'd stick with a rich red dye and go over the red you have now to make it deeper. Good luck!! Let me know how it turns out 🙂
I finally decided to bite the bullet and re-dye a few pair of my jeans that had faded pretty significantly. I did the 2:1 method and they are the PERFECT color! Thank you for your tutorial! I'd much rather spend $15 on dye than $85 on a new pair of jeans.
Thanks for your comment Andrew, I'm so happy this tutorial was helpful for you!! If you're trying to lower the cost even more, sometimes Amazon has dye at a really cheap price as an add-on to a purchase and craft stores run great sales too with Michaels doing a regular 40 or 50% off coupon each week. I normally shop with my spouse and we each buy a bottle with a coupon lol. Thanks again for taking the time time to let me know this worked out for you!
Hi I'm clarissa I've been wanting to try dyeing my kids pants for school.They have a lot of jeans that are still brand new but have white knees.Thanks for the tips.Lets see how I do!
I was able to cover the lighter "whiskering" which never faded so I do hope the white knees will get covered! I dyed a dress once and under the arms it reacted with deodorant (although it had been washed) and was lighter there but a second soaking with dye and it was all one color. I recommend going dark and measuring a little extra dye to be sure. Good luck!!!
Can I dye my ripped denim jeans without getting the ripped part dyed?
Oooo good question! You could try something similar to shibori or tie dye: cover the part you don’t want dyed with rubber bands…? But I’ve never tried it and dyeing anything is always a gamble! Another option is looking into resist dyeing and applying the same provincials: you apply a wax to what you don’t want dyed and it protects that fabric. You can buy the supplies online, Dharma Trading has tutorials and products required. Those would be two options I would try. Good luck!
I just did some of my ripped denim and the white part looked like it was dying in the bath, but once I washed them it came out. So the white part stayed white.Thanks for the tutorial Tanya. I did mine on the stove top, and it all came out perfectly. I did 3 dark wash denim pieces and 1 black. – April from http://www.stunningstyle.com
Hi April! So happy this worked out for you and that you were able to refresh some of your denim pieces. I love hearing success stories, so thanks so much for commenting 🙂
So you put the dye right in the washer???
Correct, right in the washer! And it won’t cause any problems. I clean it through with bleach after and then wash a load of darks but that’s me being too cautious. I’ve never had dye linger and transfer to other clothes. Although on my old machine, the plastic parts inside became tinted. But it actually looked better, lol, because they were yellowed and old.
Hello Tanya! The tutorial is so interesting, I reside in Nigeria, when you said salt, are you referring to salt that is used in cooking food? And how can someone get Rit Dye? The one that I have seeing in the market is in powder form which I have not really tried thou. i
Hello! It’s so amazing to connect with someone from Nigeria! I love knowing where people are reading from. Yes, the kind of salt you cook with. You can use powdered dye also. Just look for a deep navy and a black to mix together following the directions on the package. I like the convenience of bottle dyes but I have used powdered dyes also. Shipping might be too expensive, but you could try ordering online from Amazon.com? But if you have powdered dyes there, I suggest trying them! There’s nothing special about Rit, it’s just easy to find in North America. Although some dyes need a fixative so you might need to discard my instructions and follow the ones for that particular kind of dye.
I have several pairs of dark blue Levis with two problems.One is that the knees are fading from occasional kneeling.The other is that one pair has some white spots because I accidentally dripped a little bleach on them.What do you think? Is your dying technique likely to revive them?Thank you!Rich
Hi Rich, the one thing I always read about dyeing fabric is that you have to be willing to take a risk. For my jeans, the dye covered all of the whiskering and turned them into a uniform wash, so I am hopeful that for yours the dye would cover up the faded knees. Bleach is another story and I've read that it doesn't work (http://www.thefrugalgirl.com/2017/05/does-rit-dye-work-on-bleach-stains/). The bleached part still stays much lighter. I have heard that Marvy Marker Pens work well – or just a deep blue sharpie. You could also try just adding dye to the one spot – maybe take a q-tip of whatever dye you're already using for you other pair, and experiment a little. But I am less hopeful about those, I'm sorry to say!
Hi Tanya! I just stumbled upon your blog and have a couple of questions. I have two pairs of blue jeans that are faded can I dye both of them at once? and would I put the water level on small or medium? Also, do you think 2 navy and 1 black would do the job in dying the jeans a darker color? Thanks for all your help.
Hi! Yes, you can do more than one pair at a time. I'm not sure what your machine is like, I only put enough water that it can agitate freely without diluting the dye too much. So for two pairs, I imagine small setting should be good! I did a one part black to one part navy and you can see mine turned out pretty blue. I worry that yours might be REALLY blue with that ratio. Of course, dyeing depends on what shade of denim you're starting with, because it builds color on existing color. Compare your jeans to my starting point and see if you like my finished look. If you'd like them darker than mine, go with more black. If you want them bluer, go with the ratio you've suggested.
I'm so excited to try this!! I had these favorite Silver jeans in college (one style in particular manufactured sometime between 2003 & 2004 I think?) and started looking for the same style last year–just in a bigger size–and found a couple pairs on EBay and while they're still adorable I don't like that they're a medium wash so I am so happy you posted this! I'm a little nervous to do it in my washing machine…I'm going to do it when my husband is out of town so he doesn't freak out 😆 one question: when you run the bleach after to clean the machine, does it matter if the water is hot or cold? And how long a load should it run? Thank you 🙂 🙂
I promise it won't ruin the machine. The dye might tint some of the plastic parts the tiniest bit (if they're white), but it won't ruin subsequent loads. I have run SO much dye through my machine(s) over the years and never had any issues. For the bleach clean, I use a very full cycle to get as much water agitating as possible and I usually just use the regular warm/cold cycle – whatever my default cycle and temperature is. If the dye really stained any plastic (it's rare), I'll also put on some rubber gloves and grab a rag to use a bit of bleach to wipe down any areas and that does the trick. Good luck dyeing! I am so excited that you could track down your favorite style of jeans on eBay (I know that feeling).
Hi there! I’ve been searching for an answer to a problem all day and your tutorial and comments have helped a bit. Do you think a white denim vest that is not supposed to be put in hot water would dye okay in cooler water?
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I’m so happy I could help! If you use a dye like Rit then it will just be lighter. I’ve tried their dye in cooler water and the result is paler. So you could try doubling up on the dye or choosing a darker color than what you ultimately want. But there are other dye brands to try that allow for colder water. I’ve used Dharma Fiber Reactive Procion Dye, which can be used in cold water. You just need to use a fixative for the dye (called soda ash). It’s a bit more money and time, but then you can use a colder dye bath and still get a deep or vibrant hue. Here’s an ice dyeing post I did (https://www.danslelakehouse.com/2016/08/how-to-ice-dye-pillows-blue-pillows-for.html), which lists how I prepped the fabric and shows one of the colors of that brand. You’d prep it the same way, but then create a normal dye bath. Then you can get better color without putting the vest in hot water. Good luck! Be sure to wash it first, to remove an sizing (if it’s new).
Thank you for this wonderful post! Do you think I could dye two pairs of jeans at the same time if I used two black and 1 navy bottle? Thank you!
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You can always add a second pair of jeans, although you might find they both come out a bit lighter. With dye, there are so many variables (the material, the water temperature, how much water, how long it sits in the dye bath, how much it’s agitated the dye itself) so I always err on the side of caution and do more dye/less material and water if I’m going for an inky look. But they will definitely dye, it’s just a question of how deep. Happy dyeing!
Hi. I’m enjoying reading your blog. I have some ideas of my own.
I’ve washed in my front load washer but I always feel like it’s a compromise to dying in a tub or bucket because it’s really hard to have a long soak in the washer. I have to keep stopping it right before it drains, then turn it back to the wash cycle, then stop it again, and so on. The timing is really difficult. (All of this is my compromise. I’m always trying to really really save money.) You get a deeper color if you use more dye, but you also get a somewhat deeper color if you leave the fabric in a hot bath for longer. What I’ll often do is set my big bucket or pot for dying in the kitchen sink, then periodically I’ll remove a couple of cups of the dye bath and reheat the liquid in the microwave to keep the dying going. Another thing that I’ll do is remove the main stuff that I’m dying once it’s finished, then throw in some clothes that could use a boost and, again, reheat some of the dye water, and brighten up those clothes before I dump the dye.
The main reason that I even started a response, though, is that you told lindseymarie7″ to pre-war her vest to remove any sizing and you didn’t mention that anywhere else. I think it’s important for you to clarify when the pre-war is necessary and when it is not.
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Thanks for you kind words and sharing your dye process 🙂
I’m always on the fence about getting a front loader washing machine but they just don’t sound like fun, haha. I’d definitely miss the ease of machine dyeing things because I don’t enjoy the other methods – you can end up with a splotchy dye if you’re not agitating enough.
Question: if you’re already using a big pot, is it a stove top pot? Because you can also dye on a stove top and then skip the hassle of having to add more hot water.
I can certainly update the post to recommend removing sizing. I do mention rinsing or pre-washing first in the tutorial, but I can elaborate. To be honest, removing the sizing isn’t reaaallly necessary – I have skipped that and it doesn’t impact the results but in theory it can (dyeing is always a bit of gamble) – esp. in the case of Lindsey’s vest, which can’t be washed in hot water. Because she’d be missing a crucial step of the dyeing process, I wanted to be sure her best was as primed as possible. Cold water dyeing can be a struggle with some brands of dye, like Rit, so washing first was what I recommended to get her as dark a dye as possible.
Hi. Great stuff! I recently renewed a pair of Carhartt overalls by removing paint from the denim etc. I stupidly used a toothbrush on one section which has caused fading spots on the knee. I have one dylon jeans blue pod and was thinking of adding a black into the wash to give hopefully a deep indigo look. Any ideas/thoughts? I dyed in the past a pair of jeans which did NOT turn out as expected, and then just for an experiment, dyed a cheap jacket for laughs and it turned out brilliant. I dont want to ruin my overalls, but jeez, once you take the plunge theres not much going back. Haha
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Hi Rod! The one thing with dyeing is that it’s always a bit of a risk (adventure!) because the initial factory dye, color, plus any chemicals/stains/etc all impact the final look. I have used dylon dye packs in the past and I don’t like the brand so I can’t say whether it would work or not. I use rit (or also procion dyes from dharming trading – but for the latter you need to treat with soda ash first). The one nice thing is that you can always re-dye a fabric! If it’s not dark enough you can try again. I suggest using the formula I used in my post – it worked even for the whiskering on my jeans and created an even finish, so hopefully it covers the fading for you. If you’re really committed to using your dye pod, I would be inclined to do the same as you: adding a pack of black. However, you might also want to double the dye amount recommended. So maybe two denim pods and one black (I don’t remember their recommended dose). As well, make sure your overalls are washed well to remove any fabric sizing/paint/cleaner etc. Good luck!