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
66636F
RGB
102, 99, 111
HSL
255, 6%, 41%
HSB
255, 11%, 44%
CMYK
8, 11, 0, 56
LAB
43, 3, -6
LCH
43, 7, 296
OKLCH
0.51, 0.02, 297
XYZ
13, 13, 17
LUV
43, 1, -9
HWB
255, 39%, 56%
Pantone
Cool Gray 11 C
Harmonies
Shades & tints
Similar named colors
Browse every named gray on shades of gray, or all families on colors.