Blue is the only color that maintains its own character in all its tonesโฆit will always stay blue.
Raoul DufyBlue is the only color which maintains its own character in all its tones it will always stay blue; whereas yellow is blackened in its shades, and fades away when lightened; red when darkened becomes brown, and diluted with white is no longer red, but another color โ pink.
Raoul Dufy