Complementary colours are colours that are combined to make a grayscale off colours
A complementary pair is when you combine colours that are opposite of each other like red and green, or yellow and purple etc.
When you put two of these colours together they cancel each other out which leads to that grayscale of colours like grey or even brown
Answer:
The Archibald Prize was the first major prize for portraiture in Australian art. It was first awarded in 1921 after the receipt of a bequest from J. F. Archibald, the editor of The Bulletin who died in 1919.
