Colors - (Complementary|Opponent) Colors

About

Colours directly opposite to each other in a colour wheel and appears opposite in character are called complementary colours.

They cancel each other out, lose hue and produces a achromatic color (grayscale color like white or black).

In a additive model (light, screen, monitor such as rgb), the primary opponent/complementary color cancels each other to get white

You can see them in this RGB wheel.

Demo:

In a subtractive model (ink, paint, printing), there are three opponent channels that creates a color closed to black (brown).

You can see them visually in this ryb star:

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Complementary colors tend to contrast well and are therefore chosen as dual color in complementary color scheme.

Colors that are directly opposite each other on the colour wheel.

A colour and the two colors adjacent to it’s direct complement.

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