Warm Cobalt Marble

#313d6d

Notes

Warm Cobalt Marble (#313D6D) is a deep 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 (228°, 38%, 31%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. 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

#313d6d

RGB

rgb(49, 61, 109)

HSL

hsl(228, 38%, 31%)