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

By the fourth century CE, sumptuary laws in Rome had been tightened so much that only the Roman emperor was permitted to wear Tyrian purple. As a result, ‘purple’ is sometimes used as a metonym for the office (e.g. the phrase ‘donned the purple’ means ‘became emperor’).