Is there a reason that the colour purple is associated with royalty?

Question

Was there some kind of real-world instance or happening we can point to that caused purple to become the “royal colour”?

In: 51

Answer 1

Purple pigment used to be extremely rare. It doesn’t appear much in nature so, it was rare, exclusive and only the royal could afford the color. We weren’t able to just synthesize color pigments back in the day.