Zaffre
Zaffre (also spelt Zaffer), a prescientific, or alchemical substance, is a deep blue pigment obtained by roasting cobalt ore, and is made of either an impure form of cobalt oxide[1] or impure cobalt arsenate. During the Victorian Era, zaffre was used to prepare smalt and to stain glass blue.[2]
| Zaffre | |
|---|---|
 Color coordinates | |
| Hex triplet | #0014A8 |
| sRGBB (r, g, b) | (0, 20, 168) |
| HSV (h, s, v) | (233°, 100%, 66%) |
| CIELChuv (L, C, h) | (21, 81, 265°) |
| Source | X11 |
| ISCC–NBS descriptor | Deep blue |
| B: Normalized to [0–255] (byte) | |
The first recorded use of zaffer as a color name in English was sometime in the 1550s (exact year uncertain).[3]
See also
References
- ClayArt
- Mackenzie's Five Thousand Receipts in All the Useful and Domestic Arts , 1845, "Pottery: Black glazing p 369.
- Maerz and Paul A Dictionary of Color New York:1930 McGraw-Hill Page 207; Color Sample of Zaffer: Page 109 Plate 43 Color Sample D11
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