#666C6A#666C6A

#666C6A is a mid, near-neutral grey. Relative luminance 0.146; OKLCH L 52.5% C 0.008 H 174.2°. Best body text is #FFFFFF at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#666C6A
RGB	rgb(102, 108, 106)
HSL	hsl(160, 3%, 41%)
HSV	hsv(160, 6%, 42%)
CMYK	cmyk(5.6%, 0%, 1.9%, 57.6%)
CIE-LAB	lab(45.07, -2.71, 0.32)
CIE-LCH	lch(45.07, 2.73, 173.22°)
OKLab	oklab(52.54% -0.0079 0.0008)
OKLCH	oklch(52.54% 0.008 174.2)
XYZ	xyz(13.4431, 14.5904, 15.7409)
Luminance	0.1459 (WCAG relative)
Temperature	neutral
Family	grey

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666C6A #6C6668

analogous

#666C67 #666C6A #666B6C

triadic

#666C6A #6A666C #6C6A66

tetradic

#666C6A #67666C #6C6668 #6B6C66

square

#666C6A #67666C #6C6668 #6B6C66

split-complementary

#666C6A #6C666B #6C6766

monochromatic

#2B2D2C #484D4B #666C6A #848B89 #A4A9A7

Accessibility & contrast

On white

5.36

#666C6A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.92

#666C6A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666C6A

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666C6A	#FFFFFF	#000000	##FFFFFF
##666C6A	1.00	5.36	3.92	5.36
#FFFFFF	5.36	1.00	21.00	1.00
#000000	3.92	21.00	1.00	21.00
##FFFFFF	5.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C6B6A

Deuteranopia (green-blind)

#6A6A6A

Tritanopia (blue-blind)

#656C6B

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #666c6a;
/* rgb */ color: rgb(102, 108, 106);
/* oklch */ color: oklch(52.5% 0.008 174.2);

Tailwind

colors: {
  custom: {
    50: '#919694',
    500: '#666c6a',
    950: '#000000',
  },
}

SCSS

$custom: #666c6a;
$custom-light: #919694;
$custom-dark: #000000;

JSON

{
  "hex": "#666c6a",
  "rgb": {
    "r": 102,
    "g": 108,
    "b": 106
  },
  "hsl": {
    "h": 160,
    "s": 2.857,
    "l": 41.176
  },
  "oklch": {
    "l": 0.52543,
    "c": 0.00798,
    "h": 174.2
  },
  "luminance": 0.14591
}

Semantic roles & 50–950 ramp

primary

#666C6A

secondary

#999596

accent

#7C8CAC

background

#F8F9F9

surface

#F0F1F1

border

#CBCBCB

text

#0C0D0D

muted

#7D7E7E

Preview Lab

Preview with #666C6A

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

Preview Lab → · Contrast checker → · Palette generator →