Burning Cobalt Halo

#0a2a9e

Notes

Burning Cobalt Halo (#0A2A9E) is a deep blue 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 (227°, 88%, 33%) 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 amber. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX

#0a2a9e

RGB

rgb(10, 42, 158)

HSL

hsl(227, 88%, 33%)