#666D2B#666D2B

#666D2B is a mid, moderate yellow. Relative luminance 0.139; OKLCH L 51.4% C 0.090 H 114.7°. Best body text is #FFFFFF at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#666D2B
RGB	rgb(102, 109, 43)
HSL	hsl(66, 43%, 30%)
HSV	hsv(66, 61%, 43%)
CMYK	cmyk(6.4%, 0%, 60.6%, 57.3%)
CIE-LAB	lab(44.14, -12.76, 35.19)
CIE-LCH	lch(44.14, 37.43, 109.94°)
OKLab	oklab(51.41% -0.0374 0.0815)
OKLCH	oklch(51.41% 0.09 114.7)
XYZ	xyz(11.3844, 13.9367, 4.3754)
Luminance	0.1394 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#666D2B #322B6D

analogous

#6D532B #666D2B #456D2B

triadic

#666D2B #2B666D #6D2B66

tetradic

#666D2B #2B6D53 #322B6D #6D2B45

square

#666D2B #2B6D53 #322B6D #6D2B45

split-complementary

#666D2B #2B456D #532B6D

monochromatic

#151609 #3D411A #666D2B #8F993C #B1BC56

Accessibility & contrast

On white

5.54

#666D2B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.79

#666D2B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #666D2B

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##666D2B	#FFFFFF	#000000	##FFFFFF
##666D2B	1.00	5.54	3.79	5.54
#FFFFFF	5.54	1.00	21.00	1.00
#000000	3.79	21.00	1.00	21.00
##FFFFFF	5.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#746824

Deuteranopia (green-blind)

#74692F

Tritanopia (blue-blind)

#6C675F

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #666d2b;
/* rgb */ color: rgb(102, 109, 43);
/* oklch */ color: oklch(51.4% 0.090 114.7);

Tailwind

colors: {
  custom: {
    50: '#939667',
    500: '#666d2b',
    950: '#000000',
  },
}

SCSS

$custom: #666d2b;
$custom-light: #939667;
$custom-dark: #000000;

JSON

{
  "hex": "#666d2b",
  "rgb": {
    "r": 102,
    "g": 109,
    "b": 43
  },
  "hsl": {
    "h": 66.364,
    "s": 43.421,
    "l": 29.804
  },
  "oklch": {
    "l": 0.51405,
    "c": 0.08964,
    "h": 114.7
  },
  "luminance": 0.13936
}

Semantic roles & 50–950 ramp

primary

#666D2B

secondary

#5D559F

accent

#55D362

background

#F9F9F6

surface

#F2F2EB

border

#CCCCC6

text

#0D0D06

muted

#7E7E7A

Preview Lab

Preview with #666D2B

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

Preview Lab → · Contrast checker → · Palette generator →