#666C58#666C58

#666C58 is a mid, muted yellow-green. Relative luminance 0.143; OKLCH L 52.0% C 0.031 H 121.1°. Best body text is #FFFFFF at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#666C58
RGB	rgb(102, 108, 88)
HSL	hsl(78, 10%, 38%)
HSV	hsv(78, 19%, 42%)
CMYK	cmyk(5.6%, 0%, 18.5%, 57.6%)
CIE-LAB	lab(44.60, -6.22, 10.44)
CIE-LCH	lch(44.60, 12.15, 120.79°)
OKLab	oklab(52.01% -0.0162 0.0268)
OKLCH	oklch(52.01% 0.031 121.1)
XYZ	xyz(12.6033, 14.2545, 11.3181)
Luminance	0.1425 (WCAG relative)
Temperature	neutral
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666C58 #5E586C

analogous

#6C6858 #666C58 #5C6C58

triadic

#666C58 #58666C #6C5866

tetradic

#666C58 #586C68 #5E586C #6C585C

square

#666C58 #586C68 #5E586C #6C585C

split-complementary

#666C58 #585C6C #68586C

monochromatic

#262921 #464A3D #666C58 #868D74 #A3A995

Accessibility & contrast

On white

5.45

#666C58 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.85

#666C58 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666C58

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666C58	#FFFFFF	#000000	##FFFFFF
##666C58	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)

#6F6A57

Deuteranopia (green-blind)

#6E6959

Tritanopia (blue-blind)

#686A66

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #666c58;
/* rgb */ color: rgb(102, 108, 88);
/* oklch */ color: oklch(52.0% 0.031 121.1);

Tailwind

colors: {
  custom: {
    50: '#919687',
    500: '#666c58',
    950: '#000000',
  },
}

SCSS

$custom: #666c58;
$custom-light: #919687;
$custom-dark: #000000;

JSON

{
  "hex": "#666c58",
  "rgb": {
    "r": 102,
    "g": 108,
    "b": 88
  },
  "hsl": {
    "h": 78,
    "s": 10.204,
    "l": 38.431
  },
  "oklch": {
    "l": 0.52014,
    "c": 0.03132,
    "h": 121.1
  },
  "luminance": 0.14254
}

Semantic roles & 50–950 ramp

primary

#666C58

secondary

#8D8898

accent

#75B387

background

#F8F9F8

surface

#F0F1EF

border

#CBCBCA

text

#0C0D0B

muted

#7D7E7C

Preview Lab

Preview with #666C58

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

Preview Lab → · Contrast checker → · Palette generator →