Quiet Fern Opal

#12a541

Notes

Quiet Fern Opal (#12A541) is a true green with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (139°, 80%, 36%) 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 magenta. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX

#12a541

RGB

rgb(18, 165, 65)

HSL

hsl(139, 80%, 36%)