Complementary colours are located on the opposite sides on the colour wheel. When placed next to each other, they create strong visual contrast and reinforce each other’s colour vibrancy. The most commonly used combinations are red and green, yellow and violet, and blue and orange. The Impressionists used vibrant colour brushstrokes next to each other to enhance the lighting. In this digital sketch, I’ve accentuated the blue colour on the spaceship’s hull by combining it with orange engines.