I’m in the middle of designing a new commission—a pair of two-toned white oak nightstands with stained tops and drawer fronts, and natural oak interiors. The interior designer sent over a stain sample from the client’s existing bed, and I need to match it perfectly. Let me walk you through exactly how I approach matching a stain sample.
Why Most Big Box Stains Won’t Work for Matching
Here’s the thing about those pre-mixed stains you see at the hardware store—they’re not really designed for precise color matching. Take Minwax, for example. Don’t get me wrong, I’ve used it for years, and it’s a great product, but it’s really marketed toward happy homeowners who just want some color in their wood and aren’t super picky about the exact shade.
The problem is that these stains come in specific shades of brown—you’ve got your Golden Oak (very yellow-toned), your Driftwood (more greenish), and everything in between. But what if you need something right in the middle? If you try mixing Golden Oak and Driftwood together, you’re going to end up with a muddy brown because you can’t control how much yellow or green from each stain is going into your final mix. It comes with all the other tones that are mixed in at the factory.
The System That Actually Works
This is why I use General Finishes RTM system alongside their dye stains. They have base brown colors, but more importantly, they have primary colors—reds, yellows, and blues—plus combinations like orange and green.
This gives you total microcontrol over your color. Need a brownish-green? Add some green dye to your brown. Too orange? Adjust it with red and yellow. You’re less likely to end up with that muddy look because you’re working with primary colors.
I really recommend understanding how the color wheel works before diving into this. It’ll make the whole process so much easier.
Using the Color Wheel to Change Wood Tones
In stain matching, one of the reasons why understanding the color wheel is important is that you need to understand how to shift colors.
A common example I come across in my shop is with walnut wood. Some boards come with a purple hue, some boards come with a green hue.  This color variation is a natural result of how the tree grows and how the wood is processed in the kiln vs air dried. Nonetheless, if you want your boards to have a more consistent tone, you will need to add some dye to change the color of the walnut.
You would think that if you have a walnut board that has a purple tone to it, all you would need to do is add some brown dye to make it more brown and less purple. What, in fact, happens by adding brown dye is that you end up with an unattractive muddy color. Instead of trying to add brown to cover up the purple, you need to add its complementary color to cancel out the purple. So if you look at the color wheel, the color directly across from purple is yellow. So if we add yellow, it will cancel out the purple, leaving the rich brown color of the walnut wood without making it look like a muddy cover-up.
The same thing if you have a walnut board that has a green tone, add a little red to cancel out the green.
Start With a Test Piece
For these nightstands, I grabbed a leftover piece of white oak to use as my test sample. This is crucial—you want to test on the same wood species you’ll be using for the final piece because different woods react differently to stain. Some are more porous and soak up more stain, getting darker as a result. Also, the natural undertone of the wood is going to affect the final color of the stain. Lucky for me, the client’s stain sample also appears to be on white oak, which makes matching a lot easier.
The Mixing Process
Looking at the sample, I could see it’s a really dark, chocolaty espresso brown—almost a blackish brown with subtle green highlights. Here’s my process:
Start with a baseline. I began with the darkest brown they had just to see where I was starting from. Not even close, but it gave me a reference point.
Use a measuring system. I used a tablespoon to measure everything, keeping careful notes. This way, when I find the right formula (one part this, three parts that), I can easily scale it up for the whole project.
Add color gradually. I started mixing in ebony (black) one part at a time:
- 1 part dark brown + 1 part ebony
- Still not there, so I kept adding one part at a time
- After each addition, I’d test it on my sample piece
Important tip: Clean your mixing stick between colors to avoid cross-contamination. Use a fresh paper towel for each test so old stain doesn’t affect your results. You also want to keep in mind that as you use the stain to test with, you are also slightly changing the ratio. So once you get close, you want to remix from scratch to be sure the color didn’t shift by the ratio being off because you used some of the liquid, then adding additional colors back in.
Testing While Wet
Here’s something that trips people up. The color changes as it dries; you need to compare your test stain while it’s still wet, then again, after it dries. Once the stain dries, it loses its luster and looks lifeless. Since the client’s sample already has a clear coat, making the color pop, comparing dry stain won’t give you accurate results. Spray some water on it to simulate what it will look like with a top coat.
Fine-Tuning the Color
I got really close to that dark espresso brown, but my mix was missing the green tint I saw in the sample. So I started adding green dye, one small amount at a time, until the color matched. If I had gone too far with the green, it ended up too green. Not all is lost, I don’t have to pour it out, I could use the colorwheel example above and add a little red to start to cancel out some of the green. This fine tuneing processes is all about patients, you need to add color slowly and observe what happens, then adjust accordingly.
The Soak Time Factor
Even when your color looks perfect, there’s another variable to consider: soak time. The longer the stain sits on the wood before you wipe it off, the darker it gets. So I asked myself, “How long will it take me to apply stain to the whole piece?” Probably about 5 minutes per section.
I set a timer, applied the stain to my test piece, and waited 5 minutes before wiping it off any excess. During those 5 minutes, if the stain started looking dry, I’d reapply more to keep it wet—otherwise you get a streaky mess. This is exactly what I’ll do on the final piece: keep going back over what I’ve already stained to keep it wet for the full soak time.
After the 5-minute test, my sample was still a bit too light, so I added a touch more black and tested again.
Spray Stain with HVLP
As an alternative to hand wiping a stain, you can spray it using an HVLP spray gun, and use the fluid control knob to adjust how heavy you apply the stain. If you dial it in just right, you can avoid the soak time factor and not worry about wiping off the excess (manufacturer dependent, some oils stain will take forever to dry with this method). Not having to wipe off the excess also prevents streaks, hides blotching, and, with the right HVLP spray technique, allows for a more even color distribution.
If you are going to spray your piece, it is a good idea to use that same technique when creating stain samples, as each technique will produce a slightly different color variation and final look and feel.
The Top Coat Matters More Than You Think
Once I nail the stain color, I have to think about top coats. This is huge—top coats can completely change your stain color.
Clear finishes aren’t always clear:
- Many are actually amber-colored and will give your stain an amber overtone (wipe on poly)
- Some have a dark, syrupy, reddish-brown color that adds a reddish tone (Spar varnishes)
- Nitrocellulose lacquers often yellow over time, changing your color down the road (most lacquers sold at big box stores)
Since these top coats aren’t completely clear, those underlying tones in the finish can shift your stain color. This is why I use water-white finishes (conversion varnishes) for matching projects. They contain non-yellowing agents and are actually clear (or as close as you can get). They won’t mess with your carefully matched stain color.
Other Factors to Consider
Sheen level:Â A matte finish reflects light differently than high gloss, which makes the color appear different.
Grain patterns: Look closely at wood grain—deep cathedral grain can appear almost black while the surrounding wood shows your actual stain color. Rift-sawn versus flat-sawn wood from the same tree will accept stain differently.
Lighting:Â Incandescent bulbs have more yellow compared to sunlight, which affects how your stain looks.
All of these should be on your radar when you’re trying to match a stain.
The Final Result
After going through the whole range of adjustments—adding a teaspoon of black here, a bit more green there—I got something that looked really close to the client’s sample. I cut a clean piece, applied my matched stain, and sprayed it with a top coat to send off for approval.
Looking at my test piece next to the original sample, I’m pretty confident I nailed it. Now I’m just waiting for the client to give me the green light so we can move on to the next phase of this project.
The key takeaway? Matching stain is all about having the right system (primary colors you can control), testing methodically, and accounting for all the variables—soak time, top coat, sheen, and lighting. Take your time, keep good notes, and you’ll get there.
I’m the owner of Benham Design Concepts, a mixed media art studio where I design and build custom furniture and other works of art using wood, glass, stone, and various metals.
In this blog, I talk about the art I create, my journey, and the things I learn along the way.