Tyrian purple Tyrian purple Tyrian purple (, "porphúra"; ), also known as Tyrian red, Phoenician purple, royal purple, imperial purple or imperial dye, is a reddish-purple natural dye. It is a secretion produced by several species of predatory sea snails in the family Muricidae, rock snails originally known by the name "Murex". In ancient times, extracting this dye involved tens of thousands of snails and substantial labor, and as a result, the dye was highly valued. The main chemical is 6,6′-dibromoindigo. Tyrian purple may first have been used by the ancient Phoenicians as early as 1570 BC. The dye was greatly prized
British Colour Council each colour. BCC colour codes define colours as varying by hue, tone and intensity, and were originally designed for use in the textile dye industry. The colour names given by the BCC were particularly descriptive and often referred to flora or fauna, with titles such as Larkspur ("No. 196"), Forget-Me-Not ("No. 84"), Bee Eater Blue, Kermes, and Squirrel. The codes of the BCC became standards for identifying colours used in everything from the Royal Horticultural Society, to British government planning commission maps, the British Army, Royal Institute of British Architects, and the Royal Mail. BCC codes, due to their subtlety