#643A1B#643A1B

#643A1B is a dark, moderate orange. Relative luminance 0.058; OKLCH L 39.3% C 0.074 H 54.9°. Best body text is #FFFFFF at 9.71:1 contrast (WCAG AA passes).

Color values

HEX	#643A1B
RGB	rgb(100, 58, 27)
HSL	hsl(25, 57%, 25%)
HSV	hsv(25, 73%, 39%)
CMYK	cmyk(0%, 42%, 73%, 60.8%)
CIE-LAB	lab(28.94, 15.54, 26.61)
CIE-LCH	lch(28.94, 30.82, 59.72°)
OKLab	oklab(39.32% 0.0427 0.0607)
OKLCH	oklch(39.32% 0.074 54.9)
XYZ	xyz(6.9670, 5.8153, 1.7922)
Luminance	0.0582 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A1B #1B4564

analogous

#641B21 #643A1B #645E1B

triadic

#643A1B #1B643A #3A1B64

tetradic

#643A1B #21641B #1B4564 #5E1B64

square

#643A1B #21641B #1B4564 #5E1B64

split-complementary

#643A1B #1B645E #1B2164

monochromatic

#180E07 #341E0E #643A1B #945628 #C47235

Accessibility & contrast

On white

9.71

#643A1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#643A1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A1B

9.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A1B	#FFFFFF	#000000	##FFFFFF
##643A1B	1.00	9.71	2.16	9.71
#FFFFFF	9.71	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#463F18

Deuteranopia (green-blind)

#50481B

Tritanopia (blue-blind)

#6E3133

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #643a1b;
/* rgb */ color: rgb(100, 58, 27);
/* oklch */ color: oklch(39.3% 0.074 54.9);

Tailwind

colors: {
  custom: {
    50: '#947059',
    500: '#643a1b',
    950: '#000000',
  },
}

SCSS

$custom: #643a1b;
$custom-light: #947059;
$custom-dark: #000000;

JSON

{
  "hex": "#643a1b",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 27
  },
  "hsl": {
    "h": 25.479,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.39319,
    "c": 0.07418,
    "h": 54.9
  },
  "luminance": 0.05815
}

Semantic roles & 50–950 ramp

primary

#643A1B

secondary

#417499

accent

#9FE147

background

#F9F6F5

surface

#F2ECE9

border

#CCC7C5

text

#0E0703

muted

#7E7A78

Preview Lab

Preview with #643A1B

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

Preview Lab → · Contrast checker → · Palette generator →