Purple, as in the flower, the light, or the name that sounds like it.
Violet is a vivid purple, close to violet.
It can be described as vivid, vibrant, strong and bold.
Set in white, because white reads best on it.
Violet is the color of light at the short wavelength end of the visible spectrum. It is one of the seven colors that Isaac Newton labeled when dividing the spectrum of visible light in 1704. Violet light has a wavelength between approximately 380 and 435 nanometers. The color's name is derived from the Viola genus of flowers.
Read on WikipediaViolet identifies various plant taxa, particularly species in the genus Viola, within which the common violet is the best known member in Eurasia and the common blue violet and common purple violet are the best known members in North America, but also:
Read on WikipediaProper noun