#666C72#666C72

#666C72 is a mid, near-neutral grey. Relative luminance 0.148; OKLCH L 52.8% C 0.012 H 248.0°. Best body text is #FFFFFF at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#666C72
RGB	rgb(102, 108, 114)
HSL	hsl(210, 6%, 42%)
HSV	hsv(210, 11%, 45%)
CMYK	cmyk(10.5%, 5.3%, 0%, 55.3%)
CIE-LAB	lab(45.31, -0.97, -4.13)
CIE-LCH	lch(45.31, 4.24, 256.73°)
OKLab	oklab(52.81% -0.0045 -0.0111)
OKLCH	oklch(52.81% 0.012 248)
XYZ	xyz(13.8787, 14.7646, 18.0350)
Luminance	0.1477 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666C72 #726C66

analogous

#667272 #666C72 #666672

triadic

#666C72 #72666C #6C7266

tetradic

#666C72 #726672 #726C66 #667266

square

#666C72 #726672 #726C66 #667266

split-complementary

#666C72 #726666 #727266

monochromatic

#2C2F31 #494D52 #666C72 #848B91 #A4A9AE

Accessibility & contrast

On white

5.31

#666C72 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.95

#666C72 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666C72

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666C72	#FFFFFF	#000000	##FFFFFF
##666C72	1.00	5.31	3.95	5.31
#FFFFFF	5.31	1.00	21.00	1.00
#000000	3.95	21.00	1.00	21.00
##FFFFFF	5.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A6C72

Deuteranopia (green-blind)

#686B72

Tritanopia (blue-blind)

#636D6E

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #666c72;
/* rgb */ color: rgb(102, 108, 114);
/* oklch */ color: oklch(52.8% 0.012 248.0);

Tailwind

colors: {
  custom: {
    50: '#91969a',
    500: '#666c72',
    950: '#000000',
  },
}

SCSS

$custom: #666c72;
$custom-light: #91969a;
$custom-dark: #000000;

JSON

{
  "hex": "#666c72",
  "rgb": {
    "r": 102,
    "g": 108,
    "b": 114
  },
  "hsl": {
    "h": 210,
    "s": 5.556,
    "l": 42.353
  },
  "oklch": {
    "l": 0.52814,
    "c": 0.01196,
    "h": 248
  },
  "luminance": 0.14765
}

Semantic roles & 50–950 ramp

primary

#666C72

secondary

#9E9A96

accent

#9479AF

background

#F8F9F9

surface

#F0F1F2

border

#CBCBCC

text

#0C0D0E

muted

#7D7E7E

Preview Lab

Preview with #666C72

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →