Cool Cobalt Soot

#3b3c54

Notes

Cool Cobalt Soot (#3B3C54) 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 (238°, 17%, 28%) 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 yellow. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX

#3b3c54

RGB

rgb(59, 60, 84)

HSL

hsl(238, 17%, 28%)