Prussian Blue

Prussian Blue (#003153) is a deep azure with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (205°, 100%, 16%) places it in the highly saturated band at a dark lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. For a confident two-color system, pair it with its complementary orange. For something softer, pull in its analogous neighbors on either side of the wheel. Accidentally synthesised in Berlin in 1706 by an alchemist trying to make a red lake. The first modern synthetic pigment — and the blue of Hokusai's Great Wave.

Harmonies

Related Colors