#666A66#666A66

#666A66 is a mid, near-neutral grey. Relative luminance 0.141; OKLCH L 52.0% C 0.008 H 145.4°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#666A66
RGB	rgb(102, 106, 102)
HSL	hsl(120, 2%, 41%)
HSV	hsv(120, 4%, 42%)
CMYK	cmyk(3.8%, 0%, 3.8%, 58.4%)
CIE-LAB	lab(44.36, -2.37, 1.71)
CIE-LCH	lch(44.36, 2.92, 144.24°)
OKLab	oklab(51.95% -0.0065 0.0045)
OKLCH	oklch(51.95% 0.008 145.4)
XYZ	xyz(13.0314, 14.0921, 14.6013)
Luminance	0.1409 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666A66 #6A666A

analogous

#686A66 #666A66 #666A68

triadic

#666A66 #66666A #6A6666

tetradic

#666A66 #66686A #6A666A #6A6866

square

#666A66 #66686A #6A666A #6A6866

split-complementary

#666A66 #68666A #6A6668

monochromatic

#2A2C2A #484B48 #666A66 #848984 #A3A7A3

Accessibility & contrast

On white

5.50

#666A66 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#666A66 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666A66

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666A66	#FFFFFF	#000000	##FFFFFF
##666A66	1.00	5.50	3.82	5.50
#FFFFFF	5.50	1.00	21.00	1.00
#000000	3.82	21.00	1.00	21.00
##FFFFFF	5.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A6966

Deuteranopia (green-blind)

#696966

Tritanopia (blue-blind)

#666A69

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #666a66;
/* rgb */ color: rgb(102, 106, 102);
/* oklch */ color: oklch(52.0% 0.008 145.4);

Tailwind

colors: {
  custom: {
    50: '#919491',
    500: '#666a66',
    950: '#000000',
  },
}

SCSS

$custom: #666a66;
$custom-light: #919491;
$custom-dark: #000000;

JSON

{
  "hex": "#666a66",
  "rgb": {
    "r": 102,
    "g": 106,
    "b": 102
  },
  "hsl": {
    "h": 120,
    "s": 1.923,
    "l": 40.784
  },
  "oklch": {
    "l": 0.51951,
    "c": 0.00789,
    "h": 145.4
  },
  "luminance": 0.14092
}

Semantic roles & 50–950 ramp

primary

#666A66

secondary

#979497

accent

#7DABAB

background

#F8F9F8

surface

#F0F1F0

border

#CBCBCB

text

#0C0D0C

muted

#7D7E7D

Preview Lab

Preview with #666A66

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

Preview Lab → · Contrast checker → · Palette generator →