#666F57#666F57

#666F57 is a mid, muted yellow-green. Relative luminance 0.149; OKLCH L 52.7% C 0.038 H 124.4°. Best body text is #FFFFFF at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#666F57
RGB	rgb(102, 111, 87)
HSL	hsl(83, 12%, 39%)
HSV	hsv(83, 22%, 44%)
CMYK	cmyk(8.1%, 0%, 21.6%, 56.5%)
CIE-LAB	lab(45.47, -8.12, 12.25)
CIE-LCH	lch(45.47, 14.70, 123.53°)
OKLab	oklab(52.7% -0.0214 0.0313)
OKLCH	oklch(52.7% 0.038 124.4)
XYZ	xyz(12.8840, 14.8817, 11.2087)
Luminance	0.1488 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666F57 #60576F

analogous

#6F6C57 #666F57 #5A6F57

triadic

#666F57 #57666F #6F5766

tetradic

#666F57 #576F6C #60576F #6F575A

square

#666F57 #576F6C #60576F #6F575A

split-complementary

#666F57 #575A6F #6C576F

monochromatic

#272A21 #464D3C #666F57 #859172 #A3AC95

Accessibility & contrast

On white

5.28

#666F57 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.98

#666F57 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666F57

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666F57	#FFFFFF	#000000	##FFFFFF
##666F57	1.00	5.28	3.98	5.28
#FFFFFF	5.28	1.00	21.00	1.00
#000000	3.98	21.00	1.00	21.00
##FFFFFF	5.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#726C56

Deuteranopia (green-blind)

#716C58

Tritanopia (blue-blind)

#686D68

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #666f57;
/* rgb */ color: rgb(102, 111, 87);
/* oklch */ color: oklch(52.7% 0.038 124.4);

Tailwind

colors: {
  custom: {
    50: '#919886',
    500: '#666f57',
    950: '#000000',
  },
}

SCSS

$custom: #666f57;
$custom-light: #919886;
$custom-dark: #000000;

JSON

{
  "hex": "#666f57",
  "rgb": {
    "r": 102,
    "g": 111,
    "b": 87
  },
  "hsl": {
    "h": 82.5,
    "s": 12.121,
    "l": 38.824
  },
  "oklch": {
    "l": 0.52701,
    "c": 0.03796,
    "h": 124.4
  },
  "luminance": 0.14882
}

Semantic roles & 50–950 ramp

primary

#666F57

secondary

#8F889A

accent

#73B58C

background

#F8F9F8

surface

#F0F2EF

border

#CBCCCA

text

#0D0D0B

muted

#7D7E7C

Preview Lab

Preview with #666F57

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

Preview Lab → · Contrast checker → · Palette generator →