Comment by 8bitsrule

By chance, I was reading earlier today about the dilemma of recreating 'Tyrian purple', aka 'Royal purple', since knowledge of making (something like) it from sea snails was lost long ago (long before it was 'created in the lab' by Perkin in 1850s, igniting the German aniline industry). And the old faded art works (back when it was high fashion) are not so reliable either.

The Wiki sez [0] that in 1998 the process was thought to have been discovered (who can be sure?) "True Tyrian purple, like most high-chroma pigments, cannot be accurately rendered on a standard RGB computer monitor" and shows 2 quite different swatches.

[0]https://en.wikipedia.org/wiki/Tyrian_purple#Modern_hue_rende...