#643C18#643C18

#643C18 is a dark, moderate orange. Relative luminance 0.060; OKLCH L 39.7% C 0.075 H 59.7°. Best body text is #FFFFFF at 9.54:1 contrast (WCAG AA passes).

Color values

HEX	#643C18
RGB	rgb(100, 60, 24)
HSL	hsl(28, 61%, 24%)
HSV	hsv(28, 76%, 39%)
CMYK	cmyk(0%, 40%, 76%, 60.8%)
CIE-LAB	lab(29.43, 14.12, 28.81)
CIE-LCH	lch(29.43, 32.08, 63.88°)
OKLab	oklab(39.69% 0.0379 0.0648)
OKLCH	oklch(39.69% 0.075 59.7)
XYZ	xyz(7.0368, 6.0077, 1.6530)
Luminance	0.0601 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C18 #184064

analogous

#64181A #643C18 #646218

triadic

#643C18 #18643C #3C1864

tetradic

#643C18 #1A6418 #184064 #621864

square

#643C18 #1A6418 #184064 #621864

split-complementary

#643C18 #186462 #181A64

monochromatic

#190F06 #331E0C #643C18 #955A24 #C77730

Accessibility & contrast

On white

9.54

#643C18 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#643C18 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C18

9.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C18	#FFFFFF	#000000	##FFFFFF
##643C18	1.00	9.54	2.20	9.54
#FFFFFF	9.54	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#484014

Deuteranopia (green-blind)

#524918

Tritanopia (blue-blind)

#6E3334

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #643c18;
/* rgb */ color: rgb(100, 60, 24);
/* oklch */ color: oklch(39.7% 0.075 59.7);

Tailwind

colors: {
  custom: {
    50: '#947257',
    500: '#643c18',
    950: '#000000',
  },
}

SCSS

$custom: #643c18;
$custom-light: #947257;
$custom-dark: #000000;

JSON

{
  "hex": "#643c18",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 24
  },
  "hsl": {
    "h": 28.421,
    "s": 61.29,
    "l": 24.314
  },
  "oklch": {
    "l": 0.39687,
    "c": 0.07505,
    "h": 59.7
  },
  "luminance": 0.06007
}

Semantic roles & 50–950 ramp

primary

#643C18

secondary

#3E6E9A

accent

#98E443

background

#F9F6F5

surface

#F2ECE9

border

#CCC7C5

text

#0E0703

muted

#7E7A78

Preview Lab

Preview with #643C18

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

Preview Lab → · Contrast checker → · Palette generator →