Any color is more distinctly seen when opposed to its contrary: thus, black on white, blear near yellow, green near red, and so on.
Leonardo da Vinci's advice to artists (ed. Running Press Book Publishers, 1990)
Any color is more distinctly seen when opposed to its contrary: thus, black on white, blear near yellow, green near red, and so on.
Leonardo da Vinci's advice to artists (ed. Running Press Book Publishers, 1990)