Indigo Shale

#63596e

Notes

Indigo Shale (#63596E) is a true indigo 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 (269°, 11%, 39%) 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 lime. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX

#63596e

RGB

rgb(99, 89, 110)

HSL

hsl(269, 11%, 39%)