Turquoise /ˈtɜrkɔɪz/ or /ˈtɜrkwɔɪz/ is a blueish tone of light green. The color is based on the gem turquoise. The term comes from the French for Turkish.
| Turquoise | ||
|---|---|---|
— Color coordinates —
| ||
| Hex triplet | #40E0D0 | |
| RGBB | (r, g, b) | (64, 224, 208) |
| HSV | (h, s, v) | (174°, 71%, 88[1]%) |
| Source | X11 | |
| B: Normalized to [0–255] (byte) | ||
At right is displayed the X11 color named turquoise.Turquoise is an opaque, green-to-blue mineral that is a hydrous phosphate of copper and aluminium, with the chemical formulaCuAl6(PO4)4(OH)8·4H2O. It is rare and valuable in finer grades and has been prized as a gem and ornamental stone for thousands of years owing to its unique hue.
In many cultures of the Old and New Worlds, this gemstone has been esteemed for thousands of years as a holy stone, a bringer of good fortune or a talisman. The oldest evidence for this claim was found in Ancient Egypt, where grave furnishings with turquoise inlay were discovered, dating from approximately 3000 BC. In the ancient Persian Empire, the sky-blue gemstones were earlier worn round the neck or wrist as protection against unnatural death. If they changed color, the wearer was thought to have reason to fear the approach of doom. Meanwhile, it has been discovered that turquoise certainly can change color, but that this is not necessarily a sign of impending danger. The change can be caused by light, or by a chemical reaction brought about by cosmetics, dust or the acidity of the skin.
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