Chalky Aqua Shale

#638a97

Notes

Chalky Aqua Shale (#638A97) is a true cyan 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 (195°, 21%, 49%) places it in the muted 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 orange. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX

#638a97

RGB

rgb(99, 138, 151)

HSL

hsl(195, 21%, 49%)