Why are black and white often not counted as colors?
In: Physics
I don’t see a clear answer for ELI5 here so…
Because black and white are not on the visible light spectrum (ROYGBIV), they are not considered to be colors by some (first Google result calls them “shades”). It’s a purely semantic argument at that point though, as for most people “color” means the name on the crayon, period. Others may mean hue.
For the non-spectrum people, there are the often neglected “colors” of browns and pinks too. They aren’t on the spectrum either (brown is a toned down–black added–orange, pink is tinted–white added–red), but can be names on crayons.
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