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Where's purple? Or, how to plot colours properly on a computer screen

http://casa.colorado.edu/~ajsh/colour/rainbow.html

by kurtosis • 17 years ago

17 3 17 years ago

CA

casa.colorado.edu

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3

coderdude• 17 years ago

Is this different from how the human mind "invents" the color magenta?

sp3322• 17 years ago

Yes, it's a different problem. Magenta requires at least two wavelengths of light, no matter what. Purple, on the other hand can either be red + blue or a single shorter-than-blue wavelength. Computer monitors only have the option of showing purple as red + blue, because there is no "purple" subpixel on a standard RGB display. This article is about how to mix the 3 RGB channels to stimulate your chromophores to simulate the effects of a single-wavelength color.

sp3322• 17 years ago

Edit: I meant "photoreceptors" not "chromophores".

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