The blue: It is the symbol of depth. Immaterial and cold, it provokes a favorable predisposition. The sensation of placidity that the blue provokes is different from the calm or terrestrial rest, typical of the green. It is a reserved color and it enters the cold colors. It expresses harmony, friendship, fidelity, serenity, tranquility ... and has the virtue of creating the optical illusion of retreating. This color is associated with the sky, the sea and the air. The light blue can suggest optimism. The more it becomes clear, the more it loses attraction and becomes indifferent and empty. The darker it gets the more it attracts the infinite.