#643C1B#643C1B

#643C1B is a dark, moderate orange. Relative luminance 0.060; OKLCH L 39.7% C 0.073 H 57.8°. Best body text is #FFFFFF at 9.53:1 contrast (WCAG AA passes).

Color values

HEX	#643C1B
RGB	rgb(100, 60, 27)
HSL	hsl(27, 57%, 25%)
HSV	hsv(27, 73%, 39%)
CMYK	cmyk(0%, 40%, 73%, 60.8%)
CIE-LAB	lab(29.47, 14.31, 27.19)
CIE-LCH	lch(29.47, 30.72, 62.25°)
OKLab	oklab(39.72% 0.039 0.0619)
OKLCH	oklch(39.72% 0.073 57.8)
XYZ	xyz(7.0698, 6.0209, 1.8265)
Luminance	0.0602 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C1B #1B4364

analogous

#641B1F #643C1B #64601B

triadic

#643C1B #1B643C #3C1B64

tetradic

#643C1B #1F641B #1B4364 #601B64

square

#643C1B #1F641B #1B4364 #601B64

split-complementary

#643C1B #1B6460 #1B1F64

monochromatic

#180E07 #341F0E #643C1B #945928 #C47635

Accessibility & contrast

On white

9.53

#643C1B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#643C1B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C1B

9.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C1B	#FFFFFF	#000000	##FFFFFF
##643C1B	1.00	9.53	2.20	9.53
#FFFFFF	9.53	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#484018

Deuteranopia (green-blind)

#51491B

Tritanopia (blue-blind)

#6E3335

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #643c1b;
/* rgb */ color: rgb(100, 60, 27);
/* oklch */ color: oklch(39.7% 0.073 57.8);

Tailwind

colors: {
  custom: {
    50: '#947259',
    500: '#643c1b',
    950: '#000000',
  },
}

SCSS

$custom: #643c1b;
$custom-light: #947259;
$custom-dark: #000000;

JSON

{
  "hex": "#643c1b",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 27
  },
  "hsl": {
    "h": 27.123,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.39723,
    "c": 0.07317,
    "h": 57.8
  },
  "luminance": 0.0602
}

Semantic roles & 50–950 ramp

primary

#643C1B

secondary

#417299

accent

#9BE147

background

#F9F6F5

surface

#F2ECE9

border

#CCC7C5

text

#0E0703

muted

#7E7A78

Preview Lab

Preview with #643C1B

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

Preview Lab → · Contrast checker → · Palette generator →