#66641B#66641B

#66641B is a mid, moderate yellow. Relative luminance 0.120; OKLCH L 49.0% C 0.093 H 107.8°. Best body text is #FFFFFF at 6.17:1 contrast (WCAG AA passes).

Color values

HEX	#66641B
RGB	rgb(102, 100, 27)
HSL	hsl(58, 58%, 25%)
HSV	hsv(58, 74%, 40%)
CMYK	cmyk(0%, 2%, 73.5%, 60%)
CIE-LAB	lab(41.25, -8.87, 39.54)
CIE-LCH	lch(41.25, 40.53, 102.65°)
OKLab	oklab(49.05% -0.0283 0.0881)
OKLCH	oklch(49.05% 0.093 107.8)
XYZ	xyz(10.2349, 12.0186, 2.8174)
Luminance	0.1202 (WCAG relative)
Temperature	warm
Family	yellow

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66641B #1B1D66

analogous

#663E1B #66641B #42661B

triadic

#66641B #1B6664 #641B66

tetradic

#66641B #1B663E #1B1D66 #661B42

square

#66641B #1B663E #1B1D66 #661B42

split-complementary

#66641B #1B4266 #3E1B66

monochromatic

#181806 #36350E #66641B #969328 #C7C335

Accessibility & contrast

On white

6.17

#66641B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.40

#66641B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #66641B

6.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66641B	#FFFFFF	#000000	##FFFFFF
##66641B	1.00	6.17	3.40	6.17
#FFFFFF	6.17	1.00	21.00	1.00
#000000	3.40	21.00	1.00	21.00
##FFFFFF	6.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D600F

Deuteranopia (green-blind)

#6E6220

Tritanopia (blue-blind)

#6E5D56

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #66641b;
/* rgb */ color: rgb(102, 100, 27);
/* oklch */ color: oklch(49.0% 0.093 107.8);

Tailwind

colors: {
  custom: {
    50: '#948f5d',
    500: '#66641b',
    950: '#000000',
  },
}

SCSS

$custom: #66641b;
$custom-light: #948f5d;
$custom-dark: #000000;

JSON

{
  "hex": "#66641b",
  "rgb": {
    "r": 102,
    "g": 100,
    "b": 27
  },
  "hsl": {
    "h": 58.4,
    "s": 58.14,
    "l": 25.294
  },
  "oklch": {
    "l": 0.49045,
    "c": 0.09251,
    "h": 107.8
  },
  "luminance": 0.12018
}

Semantic roles & 50–950 ramp

primary

#66641B

secondary

#41449B

accent

#4BE146

background

#F9F8F5

surface

#F2F0E9

border

#CCCBC5

text

#0D0C04

muted

#7E7D79

Preview Lab

Preview with #66641B

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

Preview Lab → · Contrast checker → · Palette generator →