JP
Color solids
https://www.psy.ritsumei.ac.jp/~akitaoka/color_solid01.html
since May 13, 2023 RGBcolors256x256x3_and_its_reversed.png The color solid RGBcolors256x256x3_and_its_reversed-MK50.png Darkened color solid (transformed with multiplicated color change at the 50% level of black) RGBcolors256x256x3_and_its_reversed-AW50.png Lightened color solid …