About Cobalt
Cobalt, #0047ab, is blue at pigment strength — the 1802 cobalt-aluminate discovery that gave painters a stable, brilliant mid-blue between ultramarine’s cost and Prussian’s gloom. It remains the name for blue with maximum pigment confidence.
History
The ore’s name comes from kobolds — goblins German miners blamed for its arsenic fumes. Cobalt blue glazed Ming porcelain centuries before Thénard bottled it for Europe; van Gogh called it a divine color and roofed his skies with it.
Psychology
Cobalt is confidence in blue form — vivid without neon, serious without navy’s gravity. Fashion uses it as the statement blue; interfaces use it where trust needs energy.
In design
Cobalt is a workhorse: #0047ab passes text on white (7.7:1), electrifies white space, and pairs with orange (complement), white and charcoal. Ceramics blue-on-white — cobalt on porcelain — remains the most copied color scheme in decorative history.
In culture
Cobalt bombs, cobalt mines, cobalt skies: the word swings from geopolitics to poetry. In studios it simply means the blue that behaves.