
Colours have relative strengths, for example Yellow is a strong colour and Violet is quite weak. If you put equal amounts of these two colours they would be unbalanced, there is a near numerical method of calculating this. The numbers in this table show the relative strengths of the colours. For example, 3 squares of Yellow would be balanced by 9 squares of Violet. 4 squares of Orange would be balanced by 8 squares of Blue.
Putting this information into practice, this means for the shown map clipping: