You might not have noticed if you’re not a digital artist, but most painting and image apps still get color mixing wrong. As ...

Red and yellow make orange. Red and blue make purple. Yellow and blue make green. The third set of colours the tertiary colours are made when we mix primary and secondary colours together.

Complementary colors live on opposite sides of the color wheel. Imagine red and green, blue and orange, or yellow and purple. Or move a half step over on the wheel, and combine a yellow-green color ...