#643C2B#643C2B

#643C2B is a dark, moderate orange. Relative luminance 0.061; OKLCH L 40.0% C 0.063 H 43.6°. Best body text is #FFFFFF at 9.45:1 contrast (WCAG AA passes).

Color values

HEX	#643C2B
RGB	rgb(100, 60, 43)
HSL	hsl(18, 40%, 28%)
HSV	hsv(18, 57%, 39%)
CMYK	cmyk(0%, 40%, 57%, 60.8%)
CIE-LAB	lab(29.70, 15.61, 17.86)
CIE-LCH	lch(29.70, 23.72, 48.83°)
OKLab	oklab(39.99% 0.0456 0.0434)
OKLCH	oklch(39.99% 0.063 43.6)
XYZ	xyz(7.3079, 6.1161, 3.0807)
Luminance	0.0612 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C2B #2B5364

analogous

#642B36 #643C2B #64582B

triadic

#643C2B #2B643C #3C2B64

tetradic

#643C2B #36642B #2B5364 #582B64

square

#643C2B #36642B #2B5364 #582B64

split-complementary

#643C2B #2B6458 #2B3664

monochromatic

#150D09 #392219 #643C2B #8F563D #B57154

Accessibility & contrast

On white

9.45

#643C2B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#643C2B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C2B

9.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C2B	#FFFFFF	#000000	##FFFFFF
##643C2B	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)

#46412A

Deuteranopia (green-blind)

#50492B

Tritanopia (blue-blind)

#6D3538

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #643c2b;
/* rgb */ color: rgb(100, 60, 43);
/* oklch */ color: oklch(40.0% 0.063 43.6);

Tailwind

colors: {
  custom: {
    50: '#937264',
    500: '#643c2b',
    950: '#000000',
  },
}

SCSS

$custom: #643c2b;
$custom-light: #937264;
$custom-dark: #000000;

JSON

{
  "hex": "#643c2b",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 43
  },
  "hsl": {
    "h": 17.895,
    "s": 39.86,
    "l": 28.039
  },
  "oklch": {
    "l": 0.39985,
    "c": 0.06295,
    "h": 43.6
  },
  "luminance": 0.06115
}

Semantic roles & 50–950 ramp

primary

#643C2B

secondary

#558396

accent

#ACD058

background

#F9F6F6

surface

#F2ECEB

border

#CCC7C6

text

#0D0805

muted

#7E7B7A

Preview Lab

Preview with #643C2B

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

Preview Lab → · Contrast checker → · Palette generator →