Radiant Cobalt Signal

#0f0a8a

Notes

Radiant Cobalt Signal (#0F0A8A) 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 (242°, 86%, 29%) 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 yellow. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX

#0f0a8a

RGB

rgb(15, 10, 138)

HSL

hsl(242, 86%, 29%)