#643E35#643E35

#643E35 is a dark, muted red. Relative luminance 0.064; OKLCH L 40.6% C 0.056 H 34.0°. Best body text is #FFFFFF at 9.20:1 contrast (WCAG AA passes).

Color values

HEX	#643E35
RGB	rgb(100, 62, 53)
HSL	hsl(11, 31%, 30%)
HSV	hsv(11, 47%, 39%)
CMYK	cmyk(0%, 38%, 47%, 60.8%)
CIE-LAB	lab(30.43, 15.48, 12.45)
CIE-LCH	lch(30.43, 19.87, 38.82°)
OKLab	oklab(40.61% 0.0464 0.0313)
OKLCH	oklch(40.61% 0.056 34)
XYZ	xyz(7.6211, 6.4122, 4.2038)
Luminance	0.0641 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E35 #355B64

analogous

#643544 #643E35 #645535

triadic

#643E35 #35643E #3E3564

tetradic

#643E35 #446435 #355B64 #553564

square

#643E35 #446435 #355B64 #553564

split-complementary

#643E35 #356455 #354464

monochromatic

#140C0B #3C2520 #643E35 #8C574A #AE7366

Accessibility & contrast

On white

9.20

#643E35 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#643E35 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E35

9.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E35	#FFFFFF	#000000	##FFFFFF
##643E35	1.00	9.20	2.28	9.20
#FFFFFF	9.20	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#474334

Deuteranopia (green-blind)

#504B35

Tritanopia (blue-blind)

#6C383C

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #643e35;
/* rgb */ color: rgb(100, 62, 53);
/* oklch */ color: oklch(40.6% 0.056 34.0);

Tailwind

colors: {
  custom: {
    50: '#92736c',
    500: '#643e35',
    950: '#000000',
  },
}

SCSS

$custom: #643e35;
$custom-light: #92736c;
$custom-dark: #000000;

JSON

{
  "hex": "#643e35",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 53
  },
  "hsl": {
    "h": 11.489,
    "s": 30.719,
    "l": 30
  },
  "oklch": {
    "l": 0.4061,
    "c": 0.05597,
    "h": 34
  },
  "luminance": 0.06412
}

Semantic roles & 50–950 ramp

primary

#643E35

secondary

#608B95

accent

#B3C761

background

#F9F7F6

surface

#F1EDEB

border

#CBC8C6

text

#0D0807

muted

#7E7B7A

Preview Lab

Preview with #643E35

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

Preview Lab → · Contrast checker → · Palette generator →