#643D32#643D32

#643D32 is a dark, muted red. Relative luminance 0.063; OKLCH L 40.3% C 0.058 H 36.5°. Best body text is #FFFFFF at 9.31:1 contrast (WCAG AA passes).

Color values

HEX	#643D32
RGB	rgb(100, 61, 50)
HSL	hsl(13, 33%, 29%)
HSV	hsv(13, 50%, 39%)
CMYK	cmyk(0%, 39%, 50%, 60.8%)
CIE-LAB	lab(30.10, 15.74, 13.94)
CIE-LCH	lch(30.10, 21.03, 41.51°)
OKLab	oklab(40.34% 0.0469 0.0347)
OKLCH	oklch(40.34% 0.058 36.5)
XYZ	xyz(7.5004, 6.2777, 3.8337)
Luminance	0.0628 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D32 #325964

analogous

#643240 #643D32 #645632

triadic

#643D32 #32643D #3D3264

tetradic

#643D32 #406432 #325964 #563264

square

#643D32 #406432 #325964 #563264

split-complementary

#643D32 #326456 #324064

monochromatic

#140C0A #3B241E #643D32 #8D5646 #B07261

Accessibility & contrast

On white

9.31

#643D32 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#643D32 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D32

9.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D32	#FFFFFF	#000000	##FFFFFF
##643D32	1.00	9.31	2.26	9.31
#FFFFFF	9.31	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#464231

Deuteranopia (green-blind)

#504A32

Tritanopia (blue-blind)

#6C373A

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #643d32;
/* rgb */ color: rgb(100, 61, 50);
/* oklch */ color: oklch(40.3% 0.058 36.5);

Tailwind

colors: {
  custom: {
    50: '#92736a',
    500: '#643d32',
    950: '#000000',
  },
}

SCSS

$custom: #643d32;
$custom-light: #92736a;
$custom-dark: #000000;

JSON

{
  "hex": "#643d32",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 50
  },
  "hsl": {
    "h": 13.2,
    "s": 33.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.40337,
    "c": 0.05835,
    "h": 36.5
  },
  "luminance": 0.06277
}

Semantic roles & 50–950 ramp

primary

#643D32

secondary

#5D8995

accent

#B2C95E

background

#F9F6F6

surface

#F1ECEB

border

#CBC7C6

text

#0D0806

muted

#7E7B7A

Preview Lab

Preview with #643D32

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

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