Which color was once considered a symbol of wealth because its dye was extremely expensive to produce?

Hints

It is one of the colors of the rainbow.
Lavender and lilac are shades of this color.
It is a mix of red and blue.

Reveal the answer

Answer: Purple

Also accepted: Tyrian purple

Tyrian purple was made using secretions from certain sea snails. Producing even a small amount required thousands of snails, making the dye rare and costly. It eventually became closely associated with royalty and high social status.

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