Cool Mustard Quartz

#3a3d0b

Notes

Cool Mustard Quartz (#3A3D0B) 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 (64°, 69%, 14%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. For a confident two-color system, pair it with its complementary blue. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX

#3a3d0b

RGB

rgb(58, 61, 11)

HSL

hsl(64, 69%, 14%)