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A deep vibrant reddish purple colour.

A 20th-century depiction of a Roman triumph celebrated by Julius Caesar. Caesar, riding in the chariot, wears the solid Tyrian purple toga picta. In the foreground, two Roman magistrates are identified by their toga praetexta, white with a stripe of Tyrian purple.

Of a deep vibrant reddish purple colour.

Fabrics dyed in the current era from different species of sea snail. The colours in this photograph may not represent them precisely.

A deep vibrant reddish purple colour.

Two shells of Bolinus brandaris, the spiny dye-murex, a source of the dye