#666E66#666E66

#666E66 is a mid, near-neutral grey. Relative luminance 0.149; OKLCH L 52.9% C 0.016 H 145.3°. Best body text is #FFFFFF at 5.27:1 contrast (WCAG AA passes).

Color values

HEX	#666E66
RGB	rgb(102, 110, 102)
HSL	hsl(120, 4%, 42%)
HSV	hsv(120, 7%, 43%)
CMYK	cmyk(7.3%, 0%, 7.3%, 56.9%)
CIE-LAB	lab(45.55, -4.71, 3.42)
CIE-LCH	lch(45.55, 5.82, 144.05°)
OKLab	oklab(52.88% -0.0129 0.0089)
OKLCH	oklch(52.88% 0.016 145.3)
XYZ	xyz(13.4532, 14.9358, 14.7419)
Luminance	0.1494 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666E66 #6E666E

analogous

#6A6E66 #666E66 #666E6A

triadic

#666E66 #66666E #6E6666

tetradic

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

square

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

split-complementary

#666E66 #6A666E #6E666A

monochromatic

#2B2E2B #494E49 #666E66 #848D84 #A4ABA4

Accessibility & contrast

On white

5.27

#666E66 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.99

#666E66 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666E66

5.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666E66	#FFFFFF	#000000	##FFFFFF
##666E66	1.00	5.27	3.99	5.27
#FFFFFF	5.27	1.00	21.00	1.00
#000000	3.99	21.00	1.00	21.00
##FFFFFF	5.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E6C66

Deuteranopia (green-blind)

#6D6B66

Tritanopia (blue-blind)

#656D6C

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #666e66;
/* rgb */ color: rgb(102, 110, 102);
/* oklch */ color: oklch(52.9% 0.016 145.3);

Tailwind

colors: {
  custom: {
    50: '#919791',
    500: '#666e66',
    950: '#000000',
  },
}

SCSS

$custom: #666e66;
$custom-light: #919791;
$custom-dark: #000000;

JSON

{
  "hex": "#666e66",
  "rgb": {
    "r": 102,
    "g": 110,
    "b": 102
  },
  "hsl": {
    "h": 120,
    "s": 3.774,
    "l": 41.569
  },
  "oklch": {
    "l": 0.52883,
    "c": 0.01571,
    "h": 145.3
  },
  "luminance": 0.14936
}

Semantic roles & 50–950 ramp

primary

#666E66

secondary

#9B959B

accent

#7BADAD

background

#F8F9F8

surface

#F0F2F0

border

#CBCCCB

text

#0C0D0C

muted

#7D7E7D

Preview Lab

Preview with #666E66

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

Preview Lab → · Contrast checker → · Palette generator →