Flashing Cobalt Flare

#0f09b3

Notes

Flashing Cobalt Flare (#0F09B3) 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 (242°, 90%, 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 yellow. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX

#0f09b3

RGB

rgb(15, 9, 179)

HSL

hsl(242, 90%, 37%)