Two major theories that attempt to explain colour vision are

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The trichromatic theory posits that there are three types of colour receptors in the eye that are sensitive to different wavelengths of light, which combine to create the perception of all colours. The opponent-process theory suggests that there are three opposing colour pairs (red-green, blue-yellow, and black-white) that work together to allow us to perceive colour. These two theories work together to provide a comprehensive explanation of colour vision.

Two Major Theories That Attempt to Explain Colour Vision Are