People are using the same name for two distinct colors, a mix of blue and red on the one hand, and on the other hand the pure spectral color after blue and indi

People are using the same name for two distinct colors, a mix of blue and red on the one hand, and on the other hand the pure spectral color after blue and indigo, which by definition doesn't have any red in it, being on the other side of the spectrum. Also, modern electronics based on RGB primaries can't display violet.