Cool Fern Opal

#3a9e10

Notes

Cool Fern Opal (#3A9E10) is a deep 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 (102°, 82%, 34%) places it in the highly saturated band at a dark 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 violet. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX

#3a9e10

RGB

rgb(58, 158, 16)

HSL

hsl(102, 82%, 34%)