#643B32#643B32

#643B32 is a dark, moderate red. Relative luminance 0.061; OKLCH L 39.9% C 0.060 H 33.1°. Best body text is #FFFFFF at 9.49:1 contrast (WCAG AA passes).

Color values

HEX	#643B32
RGB	rgb(100, 59, 50)
HSL	hsl(11, 33%, 29%)
HSV	hsv(11, 50%, 39%)
CMYK	cmyk(0%, 41%, 50%, 60.8%)
CIE-LAB	lab(29.58, 16.98, 13.24)
CIE-LCH	lch(29.58, 21.53, 37.95°)
OKLab	oklab(39.94% 0.0507 0.0331)
OKLCH	oklch(39.94% 0.06 33.1)
XYZ	xyz(7.3956, 6.0682, 3.7988)
Luminance	0.0607 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B32 #325B64

analogous

#643242 #643B32 #645432

triadic

#643B32 #32643B #3B3264

tetradic

#643B32 #426432 #325B64 #543264

square

#643B32 #426432 #325B64 #543264

split-complementary

#643B32 #326454 #324264

monochromatic

#140C0A #3B231E #643B32 #8D5346 #B06F61

Accessibility & contrast

On white

9.49

#643B32 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#643B32 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B32

9.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B32	#FFFFFF	#000000	##FFFFFF
##643B32	1.00	9.49	2.21	9.49
#FFFFFF	9.49	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#454131

Deuteranopia (green-blind)

#4E4931

Tritanopia (blue-blind)

#6C3539

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #643b32;
/* rgb */ color: rgb(100, 59, 50);
/* oklch */ color: oklch(39.9% 0.060 33.1);

Tailwind

colors: {
  custom: {
    50: '#92716a',
    500: '#643b32',
    950: '#000000',
  },
}

SCSS

$custom: #643b32;
$custom-light: #92716a;
$custom-dark: #000000;

JSON

{
  "hex": "#643b32",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 50
  },
  "hsl": {
    "h": 10.8,
    "s": 33.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.39938,
    "c": 0.06049,
    "h": 33.1
  },
  "luminance": 0.06068
}

Semantic roles & 50–950 ramp

primary

#643B32

secondary

#5D8B95

accent

#B6C95E

background

#F9F6F6

surface

#F1ECEB

border

#CBC7C6

text

#0D0706

muted

#7E7A7A

Preview Lab

Preview with #643B32

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

Preview Lab → · Contrast checker → · Palette generator →