color constancy

Color constancy is the visual system's ability to perceive the colors of objects consistently, even under different lighting conditions. For example, a red apple appears red whether you see it in sunlight or under a dim indoor light. This consistency happens because our brains interpret the color information from our eyes, considering the light source and surrounding context, to maintain stable color perceptions. Essentially, your brain adjusts for varying illumination to help you recognize the true color of objects regardless of changing lighting environments.