Deep Cobalt Glass

#42507b

Notes

Deep Cobalt Glass (#42507B) 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 (225°, 30%, 37%) 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 amber. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX

#42507b

RGB

rgb(66, 80, 123)

HSL

hsl(225, 30%, 37%)