c A new shade of brown will result from combining two complementary colours, such as red and green, blue and orange, or yellow and purple.
By combining the three main hues in various ways, grey and brown are produced. White can be added to the mixture to produce different shades of grey, whilst leaving it out results in a more brownish hue.
A main colour and its complement can also be combined, as an alternative. Because the complementary colour is a combination of the other two primaries, this is the case. Purple, for instance, is a result of the mixing of red and blue. Ochre, a pale brown-gray colour, can be created by mixing a tiny quantity of purple with yellow.