Rich Mustard Echo

#5b6e0c

Notes

Rich Mustard Echo (#5B6E0C) is a deep yellow 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 (72°, 80%, 24%) 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 indigo. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX

#5b6e0c

RGB

rgb(91, 110, 12)

HSL

hsl(72, 80%, 24%)