Blazing Cobalt Aura

#0a21b2

Notes

Blazing Cobalt Aura (#0A21B2) is a true 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 (232°, 89%, 37%) places it in the highly saturated band at a mid 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

#0a21b2

RGB

rgb(10, 33, 178)

HSL

hsl(232, 89%, 37%)