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Onyx

#403D4B

A deep, muted onyx — sophisticated balance of hue and saturation that conveys composure and subtle refinement, well-suited to modern, minimalist design.

Psychology

Gray is the connective tissue of interface design — neutral, balanced, and quiet. It supports without competing.

Meaning

Sophistication, neutrality, and restraint. Warm grays feel inviting; cool grays feel modern and technical.

Applications

Essential for backgrounds, borders, dividers, and secondary text in product UIs. Build a 9–11 step gray ramp early in any design system.

Conversion

HEX
403D4B
RGB
64, 61, 75
HSL
253, 10%, 27%
HSB
253, 19%, 29%
CMYK
15, 19, 0, 71
LAB
26, 4, -8
LCH
26, 9, 295
OKLCH
0.37, 0.02, 295
XYZ
5, 5, 7
LUV
26, 1, -10
HWB
253, 24%, 71%
Pantone
Black 7 C

Harmonies

Analogous
Complementary
Split Complementary
Triadic
Tetradic
Square

Shades & tints

Similar named colors

Browse every named gray on shades of gray, or all families on colors.