Chalky Basil Shale

#637e6b

Notes

Chalky Basil Shale (#637E6B) is a true green 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 (138°, 12%, 44%) 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 magenta. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX

#637e6b

RGB

rgb(99, 126, 107)

HSL

hsl(138, 12%, 44%)