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

I’m sure someone has said this but purple marble was also the hardest to obtain, and in Rome popes stole purple marble (and all the marble) from the colosseum and other various places to put in their churches/basilicas, etc.
always thought that was wild