#643E2B#643E2B

#643E2B is a dark, moderate orange. Relative luminance 0.063; OKLCH L 40.4% C 0.061 H 47.0°. Best body text is #FFFFFF at 9.27:1 contrast (WCAG AA passes).

Color values

HEX	#643E2B
RGB	rgb(100, 62, 43)
HSL	hsl(20, 40%, 28%)
HSV	hsv(20, 57%, 39%)
CMYK	cmyk(0%, 38%, 57%, 60.8%)
CIE-LAB	lab(30.23, 14.38, 18.53)
CIE-LCH	lch(30.23, 23.45, 52.19°)
OKLab	oklab(40.39% 0.0419 0.0449)
OKLCH	oklch(40.39% 0.061 47)
XYZ	xyz(7.4147, 6.3296, 3.1163)
Luminance	0.0633 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E2B #2B5164

analogous

#642B34 #643E2B #645A2B

triadic

#643E2B #2B643E #3E2B64

tetradic

#643E2B #34642B #2B5164 #5A2B64

square

#643E2B #34642B #2B5164 #5A2B64

split-complementary

#643E2B #2B645A #2B3464

monochromatic

#150D09 #392319 #643E2B #8F593D #B57454

Accessibility & contrast

On white

9.27

#643E2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.27

#643E2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E2B

9.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E2B	#FFFFFF	#000000	##FFFFFF
##643E2B	1.00	9.27	2.27	9.27
#FFFFFF	9.27	1.00	21.00	1.00
#000000	2.27	21.00	1.00	21.00
##FFFFFF	9.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#484229

Deuteranopia (green-blind)

#514A2B

Tritanopia (blue-blind)

#6D3739

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #643e2b;
/* rgb */ color: rgb(100, 62, 43);
/* oklch */ color: oklch(40.4% 0.061 47.0);

Tailwind

colors: {
  custom: {
    50: '#937364',
    500: '#643e2b',
    950: '#000000',
  },
}

SCSS

$custom: #643e2b;
$custom-light: #937364;
$custom-dark: #000000;

JSON

{
  "hex": "#643e2b",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 43
  },
  "hsl": {
    "h": 20,
    "s": 39.86,
    "l": 28.039
  },
  "oklch": {
    "l": 0.4039,
    "c": 0.06141,
    "h": 47
  },
  "luminance": 0.06329
}

Semantic roles & 50–950 ramp

primary

#643E2B

secondary

#558096

accent

#A8D058

background

#F9F7F6

surface

#F2EDEB

border

#CCC8C6

text

#0D0805

muted

#7E7B7A

Preview Lab

Preview with #643E2B

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

Preview Lab → · Contrast checker → · Palette generator →