Final answer:
Purple is typically associated with luxury due to its historical rarity and cost, making it a symbol of wealth and power worn by nobility and royalty.
Step-by-step explanation:
The color usually associated with luxury is purple. This is because historically, purple dye was extremely difficult to produce and very expensive, making it accessible only to the wealthy and noble classes, such as royalty and gods. This association has deep historical roots, as luxury often implies not only the item itself but also the rarity and cost of the materials used to create it. Other colors like blue and gold also have historical connotations of wealth, especially when sourced from expensive materials like lapis lazuli or gilded with actual gold. However, purple's legacy as a symbol of opulence and exclusivity has endured over time, even though it may carry different meanings across different cultures.