Cool Aqua Silk

#21a9e4

Notes

Cool Aqua Silk (#21A9E4) 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 (198°, 78%, 51%) places it in the highly saturated band at a mid lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. For a confident two-color system, pair it with its complementary orange. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX

#21a9e4

RGB

rgb(33, 169, 228)

HSL

hsl(198, 78%, 51%)