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Onyx

#2D3F33

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
2D3F33
RGB
45, 63, 51
HSL
140, 17%, 21%
HSB
140, 29%, 25%
CMYK
29, 0, 19, 75
LAB
25, -10, 5
LCH
25, 11, 153
OKLCH
0.35, 0.03, 155
XYZ
3, 4, 4
LUV
25, -8, 7
HWB
140, 18%, 75%
Pantone
357 C

Harmonies

Analogous
Complementary
Split Complementary
Triadic
Tetradic
Square

Shades & tints

Similar named colors

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