Crisp Aqua Opal

#66a1a9

Notes

Crisp Aqua Opal (#66A1A9) is a true cyan with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (187°, 28%, 53%) 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 red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX

#66a1a9

RGB

rgb(102, 161, 169)

HSL

hsl(187, 28%, 53%)