#643E1B#643E1B

#643E1B is a dark, moderate orange. Relative luminance 0.062; OKLCH L 40.1% C 0.072 H 60.8°. Best body text is #FFFFFF at 9.35:1 contrast (WCAG AA passes).

Color values

HEX	#643E1B
RGB	rgb(100, 62, 27)
HSL	hsl(29, 57%, 25%)
HSV	hsv(29, 73%, 39%)
CMYK	cmyk(0%, 38%, 73%, 60.8%)
CIE-LAB	lab(30.00, 13.07, 27.78)
CIE-LCH	lch(30.00, 30.70, 64.80°)
OKLab	oklab(40.14% 0.0353 0.0632)
OKLCH	oklch(40.14% 0.072 60.8)
XYZ	xyz(7.1765, 6.2344, 1.8621)
Luminance	0.0623 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E1B #1B4164

analogous

#641B1D #643E1B #64621B

triadic

#643E1B #1B643E #3E1B64

tetradic

#643E1B #1D641B #1B4164 #621B64

square

#643E1B #1D641B #1B4164 #621B64

split-complementary

#643E1B #1B6462 #1B1D64

monochromatic

#180F07 #34200E #643E1B #945C28 #C47A35

Accessibility & contrast

On white

9.35

#643E1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#643E1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E1B

9.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E1B	#FFFFFF	#000000	##FFFFFF
##643E1B	1.00	9.35	2.25	9.35
#FFFFFF	9.35	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A4117

Deuteranopia (green-blind)

#534A1B

Tritanopia (blue-blind)

#6D3636

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #643e1b;
/* rgb */ color: rgb(100, 62, 27);
/* oklch */ color: oklch(40.1% 0.072 60.8);

Tailwind

colors: {
  custom: {
    50: '#947359',
    500: '#643e1b',
    950: '#000000',
  },
}

SCSS

$custom: #643e1b;
$custom-light: #947359;
$custom-dark: #000000;

JSON

{
  "hex": "#643e1b",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 27
  },
  "hsl": {
    "h": 28.767,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.40135,
    "c": 0.07237,
    "h": 60.8
  },
  "luminance": 0.06234
}

Semantic roles & 50–950 ramp

primary

#643E1B

secondary

#416F99

accent

#97E147

background

#F9F7F5

surface

#F2EDE9

border

#CCC8C5

text

#0E0803

muted

#7E7B78

Preview Lab

Preview with #643E1B

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

Preview Lab → · Contrast checker → · Palette generator →