#666A6E#666A6E

#666A6E is a mid, near-neutral grey. Relative luminance 0.143; OKLCH L 52.2% C 0.008 H 248.0°. Best body text is #FFFFFF at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#666A6E
RGB	rgb(102, 106, 110)
HSL	hsl(210, 4%, 42%)
HSV	hsv(210, 7%, 43%)
CMYK	cmyk(7.3%, 3.6%, 0%, 56.9%)
CIE-LAB	lab(44.60, -0.68, -2.77)
CIE-LCH	lch(44.60, 2.85, 256.29°)
OKLab	oklab(52.22% -0.003 -0.0074)
OKLCH	oklch(52.22% 0.008 248)
XYZ	xyz(13.4474, 14.2585, 16.7925)
Luminance	0.1426 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666A6E #6E6A66

analogous

#666E6E #666A6E #66666E

triadic

#666A6E #6E666A #6A6E66

tetradic

#666A6E #6E666E #6E6A66 #666E66

square

#666A6E #6E666E #6E6A66 #666E66

split-complementary

#666A6E #6E6666 #6E6E66

monochromatic

#2B2D2E #494B4E #666A6E #84898D #A4A7AB

Accessibility & contrast

On white

5.45

#666A6E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.85

#666A6E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666A6E

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666A6E	#FFFFFF	#000000	##FFFFFF
##666A6E	1.00	5.45	3.85	5.45
#FFFFFF	5.45	1.00	21.00	1.00
#000000	3.85	21.00	1.00	21.00
##FFFFFF	5.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#696A6E

Deuteranopia (green-blind)

#68696E

Tritanopia (blue-blind)

#646B6B

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #666a6e;
/* rgb */ color: rgb(102, 106, 110);
/* oklch */ color: oklch(52.2% 0.008 248.0);

Tailwind

colors: {
  custom: {
    50: '#919497',
    500: '#666a6e',
    950: '#000000',
  },
}

SCSS

$custom: #666a6e;
$custom-light: #919497;
$custom-dark: #000000;

JSON

{
  "hex": "#666a6e",
  "rgb": {
    "r": 102,
    "g": 106,
    "b": 110
  },
  "hsl": {
    "h": 210,
    "s": 3.774,
    "l": 41.569
  },
  "oklch": {
    "l": 0.52215,
    "c": 0.00799,
    "h": 248
  },
  "luminance": 0.14259
}

Semantic roles & 50–950 ramp

primary

#666A6E

secondary

#9B9895

accent

#947BAD

background

#F8F9F9

surface

#F0F1F2

border

#CBCBCC

text

#0C0D0D

muted

#7D7E7E

Preview Lab

Preview with #666A6E

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

Preview Lab → · Contrast checker → · Palette generator →