Interesting. I kinda feel that the paint mixing model here is very simplified. Not long ago there was a submission about paint mixing[1] that used a more complex model, where (among other things) you have to consider full spectral properties of the paints getting mixed.<p>Compressing colors down to a 2D chart that both informs you about color perception and mixing of paints and be 100% accurate is probably impossible, but I guess you can improve on the accuracy of the existing color wheel and be useful as an approximation.<p>Not sure about how exactly the chart informs about aesthetics and harmonizing colors, that part of dealing with colors just feels overly subjective to me. Apart from this, it's also a third aspect separate from both pure color perception and mixing of paints, so capturing it on the same chart is an additional challenge.<p>[1] <a href="https://news.ycombinator.com/item?id=39515478">https://news.ycombinator.com/item?id=39515478</a>