#643D18#643D18

#643D18 is a dark, moderate orange. Relative luminance 0.061; OKLCH L 39.9% C 0.075 H 61.1°. Best body text is #FFFFFF at 9.45:1 contrast (WCAG AA passes).

Color values

HEX	#643D18
RGB	rgb(100, 61, 24)
HSL	hsl(29, 61%, 24%)
HSV	hsv(29, 76%, 39%)
CMYK	cmyk(0%, 39%, 76%, 60.8%)
CIE-LAB	lab(29.70, 13.51, 29.09)
CIE-LCH	lch(29.70, 32.07, 65.10°)
OKLab	oklab(39.89% 0.0361 0.0654)
OKLCH	oklch(39.89% 0.075 61.1)
XYZ	xyz(7.0897, 6.1134, 1.6706)
Luminance	0.0611 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D18 #183F64

analogous

#641819 #643D18 #646318

triadic

#643D18 #18643D #3D1864

tetradic

#643D18 #196418 #183F64 #631864

square

#643D18 #196418 #183F64 #631864

split-complementary

#643D18 #186463 #181964

monochromatic

#190F06 #331F0C #643D18 #955B24 #C77930

Accessibility & contrast

On white

9.45

#643D18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#643D18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D18

9.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D18	#FFFFFF	#000000	##FFFFFF
##643D18	1.00	9.45	2.22	9.45
#FFFFFF	9.45	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#494114

Deuteranopia (green-blind)

#524918

Tritanopia (blue-blind)

#6E3435

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #643d18;
/* rgb */ color: rgb(100, 61, 24);
/* oklch */ color: oklch(39.9% 0.075 61.1);

Tailwind

colors: {
  custom: {
    50: '#947257',
    500: '#643d18',
    950: '#000000',
  },
}

SCSS

$custom: #643d18;
$custom-light: #947257;
$custom-dark: #000000;

JSON

{
  "hex": "#643d18",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 24
  },
  "hsl": {
    "h": 29.211,
    "s": 61.29,
    "l": 24.314
  },
  "oklch": {
    "l": 0.39892,
    "c": 0.07467,
    "h": 61.1
  },
  "luminance": 0.06113
}

Semantic roles & 50–950 ramp

primary

#643D18

secondary

#3E6D9A

accent

#96E443

background

#F9F6F5

surface

#F2ECE9

border

#CCC7C5

text

#0E0803

muted

#7E7B78

Preview Lab

Preview with #643D18

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

Preview Lab → · Contrast checker → · Palette generator →