Yellow · Deep Lyons Blue

A flag of pure yellow against a darkening blue sky. The yellow could not be brighter, the blue has gone toward evening.

This is contrast at its plainest and strongest. The yellow stands at full power and very light, the blue dark and deep, and the hues sit near opposite, so every kind of difference works at once, light against dark, warm against cool, bright against grave. A pairing this forceful asks for no third colour.