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Purple has long been associated with royalty, originally because Tyrian purple dye—made from the secretions of sea snails—was extremely expensive in antiquity. Purple was the color worn by Roman magistrates; it became the imperial color worn by the rulers of the Byzantine Empire and the Holy Roman Empire , and later by Roman Catholic bishops .
Good-quality purple fabric was too expensive for ordinary people. The first cobalt violet , the intensely red-violet cobalt arsenate, was highly toxic. Although it persisted in some paint lines into the 20th century, it was displaced by less toxic cobalt compounds such as cobalt phosphate.
Because it was extremely tedious to make, Tyrian purple was expensive: the 4th century BC historian Theopompus reported, "Purple for dyes fetched its weight in silver at Colophon" in Asia Minor. The expense meant that purple-dyed textiles became status symbols, whose use was restricted by sumptuary laws.
Archaeologists and volunteers excavating an ancient Roman site in the United Kingdom uncovered a “mysterious” purple lump. It turned out to be an “incredibly rare” substance once “worth ...
The colour purple, which had been a mark of aristocracy and prestige since ancient times, was especially expensive and difficult to produce. Its extraction was variable and complicated, and so Perkin and his brother realised that they had discovered a possible substitute whose production could be commercially successful.
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Throughout the Regal, Republican, and Imperial eras, the fastest, most expensive and sought-after dye was imported Tyrian purple, obtained from the murex. Its hues varied according to processing, the most desirable being a dark "dried-blood" red. Purple had long-standing associations with regality, and with the divine.
However, the actual tone varied depending on how the dye was formulated. Lesser royal houses that wanted to economize could mix Tyrian purple dye with the much less expensive indigo to create a color closer to violet.
Ultramarine was the finest and most expensive blue used by Renaissance painters. It was often used for the robes of the Virgin Mary and symbolized holiness and humility. It remained an extremely expensive pigment until a synthetic ultramarine was invented in 1826.
Han purple and Han blue (also called Chinese purple and Chinese blue) are synthetic barium copper silicate pigments developed in China and used in ancient and imperial China from the Western Zhou period (1045–771 BC) until the end of the Han dynasty (circa 220 AD).
In 1909, its structure was shown to be 6,6'-dibromoindigo (red). 6-bromoindigo (purple) is a component as well. It has never been produced on a commercial basis. The related Ciba blue (5,7,5',7'-tetrabromoindigo) is, however, of commercial value.
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related to: why was purple so expensivepurple.com has been visited by 10K+ users in the past month