Color mixing

Paint Mixing Ratio Calculator

List the colors in your mix and how many parts of each. Choose a total batch size, or the amount of the first color you have, and get the exact quantity of every paint plus a preview of the result.

Colors & parts

Calculated on your device. Nothing is uploaded to a server.

How to use the paint mixing ratio calculator

  1. Add your colorsPick a swatch for each paint and enter its parts in the recipe.
  2. Choose the batch sizeEnter the total you want, or how much of the first color you have.
  3. Measure and mixMeasure each amount, mix well, and test on a hidden spot.

How paint ratios scale

A paint recipe written in parts, such as 4 parts white to 1 part blue, describes proportions, not amounts. To scale it, the calculator adds up all the parts, divides the batch size by that total to get the volume of one part, and multiplies by each color's parts. When scaling from the first color, it uses that amount as the base instead. The color preview blends the swatches with a weighted geometric mean in linear light. This is a rough model of how pigments absorb light, so it is only approximate. Real paints vary in strength, and dark colors usually dominate more than you expect.

Mix light into dark?

No. Start with the lighter color and add small amounts of the darker one. A little dark pigment changes a light base quickly.

Record your recipe

Write down the exact parts and brands. Recreating a custom color later without them is very hard.

Paint Mixing Ratio Calculator FAQ

What does 3:1 mean in paint mixing?

Three parts of the first color for every one part of the second. In a 1 liter batch that is 750 ml and 250 ml.

Can I use decimal parts?

Yes. Enter values like 0.5 or 0.25 for small tints.

How accurate is the color preview?

It's a rough estimate. Pigment mixing depends on the specific paints, so always test a small sample first.

What does "scale by first color" do?

It keeps the recipe proportions but starts from the amount of the first color you have, which helps when you have a partly used can.

Is my recipe saved?

Yes. Your colors, parts and settings are saved in local storage in your browser.

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