Violet is closely associated with purple. In optics, violet is a spectral color (referring to the color of different single wavelengths of light), whereas purple is the color of various combinations of red and blue (or violet) light,[4][5] some of which humans perceive as similar to violet.[from wikipedia]

In the RGB color model used in computer and television screens, violet is produced by mixing red and blue light, with more blue than red.[from wikipedia]