"Purple is associated with prosperity, spirituality and sophistication. When overused it communicates ostentatiousness." You can wear purple to project trust, wisdom and release destructive emotions. You apparently shouldn't wear it when you want to evade societal regulations.
Purple looks great with contrast colours but not so good with naturals. It looks great with yellow, blue or green shades. It also works with colours within the family like pink and red. And of course you will never mess up with black or white.