Dusky Cobalt Marble

#242f8a

Notes

Dusky Cobalt Marble (#242F8A) is a deep blue with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (234°, 59%, 34%) 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 amber. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX

#242f8a

RGB

rgb(36, 47, 138)

HSL

hsl(234, 59%, 34%)