#66631B#66631B

#66631B is a mid, moderate yellow. Relative luminance 0.118; OKLCH L 48.8% C 0.091 H 107.0°. Best body text is #FFFFFF at 6.24:1 contrast (WCAG AA passes).

Color values

HEX	#66631B
RGB	rgb(102, 99, 27)
HSL	hsl(58, 58%, 25%)
HSV	hsv(58, 74%, 40%)
CMYK	cmyk(0%, 2.9%, 73.5%, 60%)
CIE-LAB	lab(40.94, -8.30, 39.24)
CIE-LCH	lch(40.94, 40.11, 101.94°)
OKLab	oklab(48.8% -0.0267 0.0874)
OKLCH	oklch(48.8% 0.091 107)
XYZ	xyz(10.1395, 11.8279, 2.7856)
Luminance	0.1183 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66631B #1B1E66

analogous

#663D1B #66631B #43661B

triadic

#66631B #1B6663 #631B66

tetradic

#66631B #1B663D #1B1E66 #661B43

square

#66631B #1B663D #1B1E66 #661B43

split-complementary

#66631B #1B4366 #3D1B66

monochromatic

#181706 #36340E #66631B #969228 #C7C135

Accessibility & contrast

On white

6.24

#66631B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.37

#66631B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #66631B

6.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66631B	#FFFFFF	#000000	##FFFFFF
##66631B	1.00	6.24	3.37	6.24
#FFFFFF	6.24	1.00	21.00	1.00
#000000	3.37	21.00	1.00	21.00
##FFFFFF	6.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C5F10

Deuteranopia (green-blind)

#6D6220

Tritanopia (blue-blind)

#6E5C55

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #66631b;
/* rgb */ color: rgb(102, 99, 27);
/* oklch */ color: oklch(48.8% 0.091 107.0);

Tailwind

colors: {
  custom: {
    50: '#948f5d',
    500: '#66631b',
    950: '#000000',
  },
}

SCSS

$custom: #66631b;
$custom-light: #948f5d;
$custom-dark: #000000;

JSON

{
  "hex": "#66631b",
  "rgb": {
    "r": 102,
    "g": 99,
    "b": 27
  },
  "hsl": {
    "h": 57.6,
    "s": 58.14,
    "l": 25.294
  },
  "oklch": {
    "l": 0.48802,
    "c": 0.09142,
    "h": 107
  },
  "luminance": 0.11828
}

Semantic roles & 50–950 ramp

primary

#66631B

secondary

#41459B

accent

#4DE146

background

#F9F8F5

surface

#F2F0E9

border

#CCCBC5

text

#0D0C04

muted

#7E7D79

Preview Lab

Preview with #66631B

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

Preview Lab → · Contrast checker → · Palette generator →