Checkerboard Shadow Illusion: Why Square B Looks Darker Than A #1730405 (License: Personal Use)

This 3D-rendered illustration demonstrates the classic checkerboard shadow illusion, where a green cylinder casts a shadow over a grayscale checkerboard. Despite square B appearing significantly darker than square A due to the shadow, both squares are objectively identical in luminance. The image highlights how human visual perception is influenced by surrounding context and inferred lighting conditions.

Used in psychology, vision science, and design education to explain perceptual constancy and contextual illusions; ideal for articles on optical illusions, cognitive bias, or UI/UX design principles involving contrast and depth.