Cobalt blue

Cobalt blue is a blue pigment made by sintering cobalt(II) oxide with aluminum(III) oxide (alumina) at 1200 °C. Cobalt blue is lighter and less intense than the (iron-cyanide based) pigment Prussian blue. It is extremely stable and historically has been used as a coloring agent in ceramics (especially Chinese porcelain), jewelry, and paint. Transparent glasses are tinted with the silica-based cobalt pigment smalt.

Hex triplet:#0047AB

sRGBB (r, g, b):(0, 71, 171)

HSV (h, s, v):(215, 100%, 67%)

CIELChuv (L, C, h):(32.8%, 62.6, 291.1)

HSL (h, s, l):(215, 100%, 34%)

LAB (l, a, b):(33, 23, -58)

Ansi256:25

ISCC–NBS descriptor: Vivid bluePublished by:

Creazilla

Reference: en.wikipedia.org/wiki/Cobalt_blue

cobalt blue shades of vivid blue colors named after minerals