Warm Cobalt Marble

#37418b

Notes

Warm Cobalt Marble (#37418B) is a true blue with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (233°, 43%, 38%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. 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

#37418b

RGB

rgb(55, 65, 139)

HSL

hsl(233, 43%, 38%)