We talked about colours, the colours we mix on the plate are not enough to represent all the visible colours. To have better understanding about the visible colours, I introduced the ICE colour spectrum and the different colour gamuts, RGB, sRGB, CMYK.
Color Wheels are wrong? How color vision actually works
Color Vision: One of Nature's Wonders
Color Space Confusion: 1931 CIE color(x,y) vs 1976 CIE(u’,v’)