Zaffre

Zaffre

Color coordinates
Hex triplet	#0014A8
sRGB^B (r, g, b)	(0, 20, 168)
HSV (h, s, v)	(233°, 100%, 66%)
CIELCh_uv (L, C, h)	(21, 81, 265°)
Source	X11
ISCC–NBS descriptor	Deep blue
B: Normalized to [0–255] (byte)

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]

The first recorded use of zaffer as a color name in English was sometime in the 1550s (exact year uncertain).^[3]

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

Shades of blue

Aero	Air Force blue	Air superiority blue	Alice Blue	Argentinian Blue	Azure	Azul	Baby blue	Berkeley Blue	Bice blue

Bleu de France	Blue	Blue-gray	Bondi blue	Brandeis blue	Byzantine blue	Cambridge blue	Carolina blue	Celestial Blue	Celtic Blue

Cerulean	Chefchaouen Blue	Chrysler blue	Cobalt blue	Columbia blue	Cornflower	Cyan	Blue (Crayola)	Dark blue	Deep Sky Blue

Delft Blue	Denim	Dodger blue	Duke blue	Egyptian blue	Glaucous	Green-blue	Electric indigo	French blue	Honolulu blue

Ice blue	Illini blue	Indigo	Indigo dye	International Klein Blue	Jordy Blue	Lapis Lazuli	Lavender	Lavender gray	Light blue

Light Sky Blue	Majorelle Blue	Marian blue	Maya blue	Medium blue	Medium slate blue	Midnight blue	Blue (Munsell)	Navy blue	Blue (NCS)

Neon blue	Non-photo blue	Oxford Blue	Palatinate blue	Pale azure	Penn Blue	Periwinkle	Persian blue	Phthalo blue	Picton Blue

Polynesian blue	Powder blue	Prussian blue	Resolution Blue	RISD Blue	Royal Blue (web color)	Royal blue (traditional)	Ruddy Blue	Sapphire	Savoy blue

Silver Lake Blue	Sky blue	Space cadet	Steel blue	Tang Blue	True Blue	Tufts Blue	UCLA Blue	Ultramarine	United Nations Blue

Uranian Blue	Violet-blue	Vista Blue	Yale Blue	YInMn Blue	Zaffre