I've had the same dream for years until I realized that the reason I had no idea how to do it is actually that it is impossible. Of course approximations are po

I've had the same dream for years until I realized that the reason I had no idea how to do it is actually that it is impossible. Of course approximations are possible and they do exist, but to make such a diagram accurate and comprehensive at the same time there are multiple obstacles: First of all the obvious fact that there is no printing or display technique with an all encompassing gamut. Also CIE 1931 is not perceptually uniform and unsuitable "To see how far [..] your perception extends.", as you expressed it. Apart from the technical difficulties the problems run deeper: Color space in reality is non-Euclidian. There is not even a perceptually uniform embedding in 3D Euclidian space, let alone one in 2D. This is how jacobolus put it once: "No, it’s not possible to have uniform color differences at all scales and in all directions in a 3-dimensional Euclidean space. If you go around a hue circle in little steps and then sum up all the perceived color differences you end up with more than π times the sum of differences you get if you go across the circle through gray." [1] Unfortunately your diagram can either be a fairly accurate depiction of a part or a fairly inaccurate depiction of the whole. [1] https://news.ycombinator.com/item?id=15485397 https://news.ycombinator.com/item?id=15485397