#666B68#666B68

#666B68 is a mid, near-neutral grey. Relative luminance 0.143; OKLCH L 52.2% C 0.008 H 159.9°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#666B68
RGB	rgb(102, 107, 104)
HSL	hsl(144, 2%, 41%)
HSV	hsv(144, 5%, 42%)
CMYK	cmyk(4.7%, 0%, 2.8%, 58%)
CIE-LAB	lab(44.72, -2.55, 1.01)
CIE-LCH	lch(44.72, 2.74, 158.31°)
OKLab	oklab(52.25% -0.0072 0.0026)
OKLCH	oklch(52.25% 0.008 159.9)
XYZ	xyz(13.2354, 14.3396, 15.1645)
Luminance	0.1434 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666B68 #6B6669

analogous

#666B66 #666B68 #666B6A

triadic

#666B68 #68666B #6B6866

tetradic

#666B68 #66666B #6B6669 #6B6A66

square

#666B68 #66666B #6B6669 #6B6A66

split-complementary

#666B68 #6A666B #6B6666

monochromatic

#2A2C2B #484C4A #666B68 #848A87 #A4A8A5

Accessibility & contrast

On white

5.43

#666B68 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#666B68 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666B68

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666B68	#FFFFFF	#000000	##FFFFFF
##666B68	1.00	5.43	3.87	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B6A68

Deuteranopia (green-blind)

#6A6968

Tritanopia (blue-blind)

#656B6A

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #666b68;
/* rgb */ color: rgb(102, 107, 104);
/* oklch */ color: oklch(52.2% 0.008 159.9);

Tailwind

colors: {
  custom: {
    50: '#919593',
    500: '#666b68',
    950: '#000000',
  },
}

SCSS

$custom: #666b68;
$custom-light: #919593;
$custom-dark: #000000;

JSON

{
  "hex": "#666b68",
  "rgb": {
    "r": 102,
    "g": 107,
    "b": 104
  },
  "hsl": {
    "h": 144,
    "s": 2.392,
    "l": 40.98
  },
  "oklch": {
    "l": 0.52247,
    "c": 0.00769,
    "h": 159.9
  },
  "luminance": 0.1434
}

Semantic roles & 50–950 ramp

primary

#666B68

secondary

#989597

accent

#7C99AC

background

#F8F9F9

surface

#F0F1F1

border

#CBCBCB

text

#0C0D0D

muted

#7D7E7E

Preview Lab

Preview with #666B68

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

Preview Lab → · Contrast checker → · Palette generator →