Quiet Aqua Sheen

#40dddb

Notes

Quiet Aqua Sheen (#40DDDB) is a true cyan with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (179°, 70%, 56%) 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

#40dddb

RGB

rgb(64, 221, 219)

HSL

hsl(179, 70%, 56%)