Chalky Cobalt Shale

#373a53

Notes

Chalky Cobalt Shale (#373A53) 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 (234°, 20%, 27%) places it in the muted 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

#373a53

RGB

rgb(55, 58, 83)

HSL

hsl(234, 20%, 27%)