This tool allows you to mix colors in the cmy (cyan, magenta, yellow) color space. You can use this in your favorite digital drawing application by using the colors that result from mixing.

Simply add or remove colors with the plus and minus icons, and edit the colors by clicking on them.

Only a maximum of four colors is allowed, the idea being that you are creating a limited palette. If you use these colors in your composition, it will feel like a whole.