Noun
a color that has hue
Source: WordNetNo mixture of colors, however, can produce a response truly identical to that of a spectral color, although one can get close, especially for the longer wavelengths, where the CIE 1931 color space chromaticity diagram has a nearly straight edge. Source: Internet
Many such sources can still effectively produce a spectral color, as the eye cannot distinguish them from single-wavelength sources. Source: Internet
Violet is a spectral color – it occupies its own place at the end of the spectrum of light first identified by Newton in 1672, and it has its own wavelength (approximately 380–420 nm) – whereas purple is a combination of two spectral colors, red and blue. Source: Internet