Spectral colors depend on light wavelength and frequency {hue}. People can distinguish 160 hues, from light of wavelength 400 nm to 700 nm. Therefore, people can distinguish colors differing by approximately 2 nm of wavelength.
color mixtures
Hue can come from light of one wavelength or light mixtures with different wavelengths. Hue takes the weighted average of the wavelengths. Assume colors can have brightness 0 to 100. If red is 100, green is 0, and blue is 0, hue is red at maximum brightness. If red is 50, green is 0, and blue is 0, hue is red at half maximum brightness. If red is 25, green is 0, and blue is 0, hue is red at quarter maximum brightness.
If red is 100, green is 100, and blue is 0, hue is yellow at maximum brightness. If red is 50, green is 50, and blue is 0, hue is yellow at half maximum brightness. If red is 25, green is 25, and blue is 0, hue is yellow at quarter maximum brightness.
If red is 100, green is 50, and blue is 0, hue is orange at maximum brightness. If red is 50, green is 25, and blue is 0, hue is orange at half maximum brightness. If red is 24, green is 12, and blue is 0, hue is orange at quarter maximum brightness.
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Date Modified: 2022.0224