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Royal Purple is an American manufacturer which produces lubricants for automotive, industrial, marine, and racing use. [2] It is known primarily for its line of synthetic Royal Purple Motor Oil products used in gasoline and diesel engines .
The color Byzantium is a particular dark tone of purple.It originates in modern times, and, despite its name, it should not be confused with Tyrian purple (hue rendering), the color historically used by Roman and Byzantine emperors.
Tyrian purple subsequently became associated with the upper classes. It soon became a status symbol in several civilizations, most notably among the Romans. Assyrian tribute records from the Phoenicians include "garments of brightly colored stuff" that most likely included Tyrian purple.
Tyrian purple: Phoenician red Natural violet 1 75800 natural 19201-53-7: Uranin: Fluoresceine sodium Acid yellow 73 45350 fluorone 518-47-8: Vat Blue 6 Blue K Vat blue 6 69825 anthraquinone 130-20-1: Vat Blue 36: Vat blue 36 73675 indigoid 6424-69-7: Vat brown 1: Vat brown 1 70802 anthraquinone 2475-33-4: Vat Green 1: Jade green base Vat green ...
They are annual or perennial herbaceous vines, bines and (a few species of) woody shrubs, growing to 0.3–3 m tall.The leaves are spirally arranged, and the flowers trumpet-shaped, mostly white or pink, but blue, violet, purple, or yellow in some species.
Regulations governing the use of expensive Tyrian purple dyestuffs varied over the years, but cloth dyed in these colours was generally restricted to specific classes and was used in diplomatic gifts. Other dyes used in Byzantine silk workshops were madder, kermes, indigo, weld, and sappanwood. [13]
Costly and labor-intensive dyes Tyrian purple (or "royal purple") and tekhelet were historically made by the ancient Phoenicians and Jews respectively, using mucus from the hypobranchial gland of two species commonly referred to as "murex", Murex brandaris and Murex trunculus, which are the older names for Bolinus brandaris and Hexaplex ...
The Tyrian shekels were considered tetradrachms by the Greeks, as they weighed four Athenian drachmas, about 14 grams [citation needed], more than earlier 11-gram shekels but regarded as equivalent for religious duties at that time. [4]