#666B59#666B59

#666B59 is a mid, muted yellow-green. Relative luminance 0.141; OKLCH L 51.8% C 0.028 H 120.0°. Best body text is #FFFFFF at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#666B59
RGB	rgb(102, 107, 89)
HSL	hsl(77, 9%, 38%)
HSV	hsv(77, 17%, 42%)
CMYK	cmyk(4.7%, 0%, 16.8%, 58%)
CIE-LAB	lab(44.32, -5.46, 9.46)
CIE-LCH	lch(44.32, 10.92, 120.02°)
OKLab	oklab(51.8% -0.0141 0.0244)
OKLCH	oklch(51.8% 0.028 120)
XYZ	xyz(12.5401, 14.0615, 11.5028)
Luminance	0.1406 (WCAG relative)
Temperature	neutral
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666B59 #5E596B

analogous

#6B6759 #666B59 #5D6B59

triadic

#666B59 #59666B #6B5966

tetradic

#666B59 #596B67 #5E596B #6B595D

square

#666B59 #596B67 #5E596B #6B595D

split-complementary

#666B59 #595D6B #67596B

monochromatic

#262821 #464A3D #666B59 #868C75 #A3A896

Accessibility & contrast

On white

5.51

#666B59 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#666B59 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666B59

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666B59	#FFFFFF	#000000	##FFFFFF
##666B59	1.00	5.51	3.81	5.51
#FFFFFF	5.51	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E6958

Deuteranopia (green-blind)

#6D695A

Tritanopia (blue-blind)

#686966

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #666b59;
/* rgb */ color: rgb(102, 107, 89);
/* oklch */ color: oklch(51.8% 0.028 120.0);

Tailwind

colors: {
  custom: {
    50: '#919588',
    500: '#666b59',
    950: '#000000',
  },
}

SCSS

$custom: #666b59;
$custom-light: #919588;
$custom-dark: #000000;

JSON

{
  "hex": "#666b59",
  "rgb": {
    "r": 102,
    "g": 107,
    "b": 89
  },
  "hsl": {
    "h": 76.667,
    "s": 9.184,
    "l": 38.431
  },
  "oklch": {
    "l": 0.51804,
    "c": 0.02814,
    "h": 120
  },
  "luminance": 0.14061
}

Semantic roles & 50–950 ramp

primary

#666B59

secondary

#8D8997

accent

#76B286

background

#F8F9F8

surface

#F0F1EF

border

#CBCBCA

text

#0C0D0B

muted

#7D7E7C

Preview Lab

Preview with #666B59

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

Preview Lab → · Contrast checker → · Palette generator →