Placed next to each other, complementary colours make each other appear brighter. On a colour wheel, complementary colours are on opposite sides of the wheel – for example, red and green or blue and orange.
Harakeke on hill top, Kate Whitley, 2010.
See how Brake uses contrasting colours in this image:
Fiji, Royal Tour:
1953, Brake, Brian (1927–1988), Fiji. Gift of Mr Raymond Wai-Man Lau, 2001. Te Papa