Cool Aqua Opal

#51a9a6

Notes

Cool Aqua Opal (#51A9A6) 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 (178°, 35%, 49%) 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 red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX

#51a9a6

RGB

rgb(81, 169, 166)

HSL

hsl(178, 35%, 49%)