An enhanced perception of difference between 2 stimuli when they are presented close to each other. See colour contrast; contrast illusion; Mach bands. For understanding, you can compare it with succe [..]

effect that adjacent color hues have upon each other.

The tendency of complementary colors to seem brighter and more intense when placed side by side.

The tendency of complementary colors to seem brighter and more intense when placed side by side.

An optical effect created when contrasting forms and/or colors emphasize their differences when used or viewed together.

The term is used in art to refer to a certain phenomenon whereby complementary colours appear brighter and more intense when placed next to each other. The National Flag of Portugal is a point in case [..]

Mutual enhancement of color intensities results from juxtaposing complementary colors, for example, red and green, both, look much more vivid when placed beside one another.