Peter Goldberg Bouclair | Every great design uses the 60, 30, 10 rule. What that means is that the main color takes up 60% of your visual space, while a complementary one takes up 30. Then, you finish off the look with an accent hue, taking up – you guessed it – 10% of the visual space.
https://www.youtube.com/watch?v=BliRAxBQYVk