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Onyx

#403F55

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
403F55
RGB
64, 63, 85
HSL
243, 15%, 29%
HSB
243, 26%, 33%
CMYK
25, 26, 0, 67
LAB
27, 5, -13
LCH
27, 14, 289
OKLCH
0.38, 0.04, 287
XYZ
6, 5, 9
LUV
27, -1, -16
HWB
243, 25%, 67%
Pantone
534 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.