Rich Mustard Crystal

#151707

Notes

Rich Mustard Crystal (#151707) is a deep yellow with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (68°, 53%, 6%) 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

#151707

RGB

rgb(21, 23, 7)

HSL

hsl(68, 53%, 6%)