#643D1D#643D1D

#643D1D is a dark, moderate orange. Relative luminance 0.061; OKLCH L 40.0% C 0.071 H 58.0°. Best body text is #FFFFFF at 9.43:1 contrast (WCAG AA passes).

Color values

HEX	#643D1D
RGB	rgb(100, 61, 29)
HSL	hsl(27, 55%, 25%)
HSV	hsv(27, 71%, 39%)
CMYK	cmyk(0%, 39%, 71%, 60.8%)
CIE-LAB	lab(29.75, 13.82, 26.38)
CIE-LCH	lch(29.75, 29.78, 62.34°)
OKLab	oklab(39.95% 0.0379 0.0606)
OKLCH	oklch(39.95% 0.071 58)
XYZ	xyz(7.1466, 6.1362, 1.9702)
Luminance	0.0614 (WCAG relative)
Temperature	warm
Family	orange

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D1D #1D4464

analogous

#641D21 #643D1D #64601D

triadic

#643D1D #1D643D #3D1D64

tetradic

#643D1D #21641D #1D4464 #601D64

square

#643D1D #21641D #1D4464 #601D64

split-complementary

#643D1D #1D6460 #1D2164

monochromatic

#180E07 #35200F #643D1D #935A2B #C37739

Accessibility & contrast

On white

9.43

#643D1D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#643D1D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D1D

9.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D1D	#FFFFFF	#000000	##FFFFFF
##643D1D	1.00	9.43	2.23	9.43
#FFFFFF	9.43	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#49411A

Deuteranopia (green-blind)

#524A1D

Tritanopia (blue-blind)

#6D3536

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #643d1d;
/* rgb */ color: rgb(100, 61, 29);
/* oklch */ color: oklch(40.0% 0.071 58.0);

Tailwind

colors: {
  custom: {
    50: '#94725a',
    500: '#643d1d',
    950: '#000000',
  },
}

SCSS

$custom: #643d1d;
$custom-light: #94725a;
$custom-dark: #000000;

JSON

{
  "hex": "#643d1d",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 29
  },
  "hsl": {
    "h": 27.042,
    "s": 55.039,
    "l": 25.294
  },
  "oklch": {
    "l": 0.39954,
    "c": 0.07142,
    "h": 58
  },
  "luminance": 0.06136
}

Semantic roles & 50–950 ramp

primary

#643D1D

secondary

#447399

accent

#9BDE49

background

#F9F6F5

surface

#F2ECE9

border

#CCC7C5

text

#0E0804

muted

#7E7B79

Preview Lab

Preview with #643D1D

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

Preview Lab → · Contrast checker → · Palette generator →