#643D1B#643D1B

#643D1B is a dark, moderate orange. Relative luminance 0.061; OKLCH L 39.9% C 0.073 H 59.3°. Best body text is #FFFFFF at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#643D1B
RGB	rgb(100, 61, 27)
HSL	hsl(28, 57%, 25%)
HSV	hsv(28, 73%, 39%)
CMYK	cmyk(0%, 39%, 73%, 60.8%)
CIE-LAB	lab(29.73, 13.69, 27.48)
CIE-LCH	lch(29.73, 30.70, 63.52°)
OKLab	oklab(39.93% 0.0371 0.0626)
OKLCH	oklch(39.93% 0.073 59.3)
XYZ	xyz(7.1226, 6.1266, 1.8441)
Luminance	0.0613 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D1B #1B4264

analogous

#641B1E #643D1B #64611B

triadic

#643D1B #1B643D #3D1B64

tetradic

#643D1B #1E641B #1B4264 #611B64

square

#643D1B #1E641B #1B4264 #611B64

split-complementary

#643D1B #1B6461 #1B1E64

monochromatic

#180F07 #34200E #643D1B #945A28 #C47835

Accessibility & contrast

On white

9.44

#643D1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#643D1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D1B

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D1B	#FFFFFF	#000000	##FFFFFF
##643D1B	1.00	9.44	2.23	9.44
#FFFFFF	9.44	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#494117

Deuteranopia (green-blind)

#524A1B

Tritanopia (blue-blind)

#6E3535

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #643d1b;
/* rgb */ color: rgb(100, 61, 27);
/* oklch */ color: oklch(39.9% 0.073 59.3);

Tailwind

colors: {
  custom: {
    50: '#947259',
    500: '#643d1b',
    950: '#000000',
  },
}

SCSS

$custom: #643d1b;
$custom-light: #947259;
$custom-dark: #000000;

JSON

{
  "hex": "#643d1b",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 27
  },
  "hsl": {
    "h": 27.945,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.39928,
    "c": 0.07274,
    "h": 59.3
  },
  "luminance": 0.06126
}

Semantic roles & 50–950 ramp

primary

#643D1B

secondary

#417099

accent

#99E147

background

#F9F6F5

surface

#F2ECE9

border

#CCC7C5

text

#0E0803

muted

#7E7B78

Preview Lab

Preview with #643D1B

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

Preview Lab → · Contrast checker → · Palette generator →