Blue + Yellow pigment yields the color green

Hypothetical reflectance functions for blue and yellow paints. Blue paint reflects most light at the short wavelengths and absorbs light of long wavelengths. Yellow paint reflects most light at long wavelengths and absorbs light at short wavelengths.

Because blue paint and yellow paint both reflect middle (green appearing) wavelengths when blue and yellow paint are mixed together, the mixture appears green.

Color/Color Vision

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