Deep Cobalt Crystal

#40339e

Notes

Deep Cobalt Crystal (#40339E) 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 (247°, 51%, 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

#40339e

RGB

rgb(64, 51, 158)

HSL

hsl(247, 51%, 41%)