eli5 what is the color grey

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wasn’t sure if i should post here or to nostupidquestions.

so i get that there 3 primary colors, Red, Blue, Yellow, combining them you get a secondary color.

add red and blue you get purple, add blue and yellow you get green, add yellow and red you get orange, combine all 3 you get brown.

So wouldn’t brown be a dark white or a light black since white is the presence of all color and black is the absence?

I think i also read somewhere that RBY only works for paint, but when it comes to atoms releasing photons, the three primary colors are RBG, in which case start from the top, go into the quantum chemistry if you need.

In: Physics

7 Answers

Anonymous 0 Comments

RBY doesn’t actually work for paint, and the fact that you can’t make grey with them is an example of why. Cyan, magenta, yellow, and white gives you grey. Cyan, magenta and yellow are the subtractive primaries and make black*, white simply dilutes that mix into grey.

*well technically a very dark grey, absolutely pure black can’t physically exist, best anyone has done is Vantablack, which is 99.965% black. But for all practical purposes this can be called black.

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