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Onyx

#403F50

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
403F50
RGB
64, 63, 80
HSL
244, 12%, 28%
HSB
244, 21%, 31%
CMYK
20, 21, 0, 69
LAB
27, 4, -10
LCH
27, 11, 289
OKLCH
0.38, 0.03, 288
XYZ
5, 5, 8
LUV
27, 0, -13
HWB
244, 25%, 69%
Pantone
Cool Gray 11 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.