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Blue pigment in nature...
Blue pigment in plants
Egyptian blue
Pigment used in ancient Egypt
"Caeruleum" redirects here. For the genus of lamprey, see Caeruleum (lamprey). For the genus of lichen fungus, see Caeruleum (lichen).
| Egyptian blue | |
|---|---|
| Hex triplet | #1034A6 |
| sRGBB (r, g, b) | (16, 52, 166) |
| HSV (h, s, v) | (226°, 90%, 65%) |
| CIELChuv (L, C, h) | (28, 82, 263°) |
| Source | [Unsourced] |
| ISCC–NBS descriptor | Vivid blue |
| B: Normalized to [0–255] (byte) | |
Egyptian blue, also known as calcium copper silicate (CaCuSi4O10 or CaOCuO(SiO2)4 (calcium copper tetrasilicate)) or cuprorivaite,[1] is a pigment that was used in ancient Egypt for thousands of years.
It is considered to be the first synthetic pigment.[2] It was known to the Romans by the name caeruleum.
What is blue pigment made fromAfter the Roman era, Egyptian blue fell out of use and, thereafter, the manner of its creation was forgotten. In modern times, scientists have been able to analyze its chemistry and reconstruct how to make it.
The ancient Egyptian word wꜣḏ signifies blue, blue-green, and green.
The first recorded use
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