Dusky Cobalt Marble

#0f1470

Notes

Dusky Cobalt Marble (#0F1470) 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 (237°, 76%, 25%) 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

#0f1470

RGB

rgb(15, 20, 112)

HSL

hsl(237, 76%, 25%)