Why does the perceived color of an object under low-light conditions shift towards blues and greens, even if the object is normally red?

💡 Explanation

The Purkinje shift explains the change in perceived color because scotopic vision relies on rod cells, which are more sensitive to shorter (blue/green) wavelengths than cone cells. Therefore, colors shift toward blue/green rather than red, because the cone cells responsible for red perception are less active in low light.

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