Purple is used for the range of shades of color occurring between red and blue.In color theory, a "purple" is defined as any non-spectral color between violet and red.In art, purple is the color on the color wheel between magenta and violet and its tints and shades. This color, electric purple, is shown below.In human color psychology, purple is associated with royalty and nobility (stemming from classical antiquity when Tyrian Purple was only affordable to the elites).