Purple

Violet is red that has almost been transformed into blue. It holds a little onto both, it remembers both, which makes it mysterious, ambiguous and suggestive. Early Renaissance artists liked to depict angels, busy on errands of mercy between heaven and earth, as wearing violet gowns. The colour evoked for them the idea of an infinite ‘beyond’ that was not threatening or dangerous, somewhere we could long for but which remained always just out of sight.

The School Of Life - The Psychology of Colour