Day 22: Opposites Attract

Complementary colours sit opposite each other on the colour wheel: red and green, blue and orange, purple and yellow. Placed side by side at full saturation, they intensify each other and can appear to vibrate. Used carefully — one dominant, one accent — they create energy without chaos.

Objective. Use a complementary pair to create energy and emphasis.

Design a poster for a sports tournament using one pair of complementary colours.

• One complementary pair, plus black or white if needed
• One colour must clearly dominate
• Shapes and typography

• A true complementary pair
• Clear dominant and accent colours
• Energy without visual discomfort

Desaturate one of the pair slightly and see how much control you gain.