Deep Cobalt Crystal

#373e9a

Notes

Deep Cobalt Crystal (#373E9A) 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 (236°, 47%, 41%) 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 yellow. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX

#373e9a

RGB

rgb(55, 62, 154)

HSL

hsl(236, 47%, 41%)