About Ultramarine
Ultramarine, #3f00ff, is blue pushed toward violet — historically the most expensive color ever sold. Ground from Afghan lapis lazuli and shipped “beyond the sea” (ultra marinus), it was priced by the carat and rationed by contract.
History
Renaissance patrons specified ultramarine by weight in painting contracts — reserved for the Virgin’s robe because nothing else was worthy of the cost. Synthetic ultramarine (1826, prize-winning) democratized it overnight; Yves Klein then patented his own matte version, IKB, and painted everything.
Psychology
Ultramarine is depth itself — blue at maximum sincerity, leaning violet toward the spiritual. Klein chose it precisely because it seemed to open into space rather than sit on a surface.
In design
Ultramarine electrifies as accents and art-directed heroes; #3f00ff is display-only on white (large text at best). Its usable descendants are the indigo UI family. Pair with white for gallery starkness, gold for Renaissance quotes, warm gray to calm it.
In culture
IKB, lapis manuscripts, “ultramarine” as poetry’s deepest blue: the pigment’s price wrote centuries of art history — where blue appears in old masters, budget decisions appear too.