Cobalt blue is a cool, slightly desaturated blue , historically made using salts of . It is used in certain ceramics (historically, especially Chinese porcelain) and painting; the different cobalt pigment , based on , is more often used directly in tinted transparent . The pigment is extraordinarily stable.

Chemically, cobalt blue is a -, or , CoAl₂O₄. The compound is made by the stoichiometric mixture of finely ground CoO and Al₂O₃ (alumina) at 1200°C.Moncler ned Frakker Kvinder

Cobalt blue in impure form had long been used in Chinese porcelain, but was independently discoveredMoncler Jakker as a pure alumina-based pigment by , in 1802. Commercial production began in France in 1807. The first recorded use of cobalt blue as a color name in was in 1777. The leading world manufacturer of cobalt blue in the 19th century was ("blue-color works," in Dano-Norwegian) in Discount Moncler Jakker, led by . Germany was also famous for production- especially the Blaufarbenwerke ("blue-color works,Moncler Online" in German) of Schneeburg. The dye is not to be confused with , which is an intensely-blue pigment based on iron and cyanide, that contains no cobalt.Kb Moncler