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
66636D
RGB
102, 99, 109
HSL
258, 5%, 41%
HSB
258, 9%, 43%
CMYK
6, 9, 0, 57
LAB
43, 3, -5
LCH
43, 6, 298
OKLCH
0.51, 0.02, 300
XYZ
13, 13, 16
LUV
43, 1, -7
HWB
258, 39%, 57%
Pantone
Cool Gray 11 C
Harmonies
Shades & tints
Similar named colors
Browse every named gray on shades of gray, or all families on colors.