this post was submitted on 15 Jul 2023
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Explain Like I'm Five

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How do computers make any color using red/green/blue, when paints make every clor using red/yellow/blue?o (wirebase.org)
submitted 1 year ago by [email protected] to c/explainlikeimfive
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Im always confused by RGB. I learned that if you want orange, you mix red and yellow. If you want green, you mix blue and yellow, if you want purple, you mix red and blue.

How is it that computers need green and not yellow?

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[โ€“] [email protected] 2 points 1 year ago (1 children)

Light vs pigment.

Computers use light, where the primary colors are Red, Blue and Green. Paint is in pigments, where the primary colors are Red, Yellow and Blue.

[โ€“] [email protected] 1 points 1 year ago

Just to clarify, with pigments (subtractive color mixing) the primary colors are in reality cyan, magenta, and yellow, which is why printers use CMY (and K, which is black). Blue and red are kinda close to cyan and magenta though, so those are sometimes stated as the primary colors along with yellow even though that's not exact