#643E34#643E34

#643E34 is a dark, muted red. Relative luminance 0.064; OKLCH L 40.6% C 0.056 H 35.5°. Best body text is #FFFFFF at 9.21:1 contrast (WCAG AA passes).

Color values

HEX	#643E34
RGB	rgb(100, 62, 52)
HSL	hsl(13, 32%, 30%)
HSV	hsv(13, 48%, 39%)
CMYK	cmyk(0%, 38%, 48%, 60.8%)
CIE-LAB	lab(30.41, 15.36, 13.07)
CIE-LCH	lch(30.41, 20.17, 40.38°)
OKLab	oklab(40.59% 0.0459 0.0327)
OKLCH	oklch(40.59% 0.056 35.5)
XYZ	xyz(7.5984, 6.4031, 4.0839)
Luminance	0.0640 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E34 #345A64

analogous

#643442 #643E34 #645634

triadic

#643E34 #34643E #3E3464

tetradic

#643E34 #426434 #345A64 #563464

square

#643E34 #426434 #345A64 #563464

split-complementary

#643E34 #346456 #344264

monochromatic

#140C0A #3C251F #643E34 #8C5749 #AE7464

Accessibility & contrast

On white

9.21

#643E34 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#643E34 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E34

9.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E34	#FFFFFF	#000000	##FFFFFF
##643E34	1.00	9.21	2.28	9.21
#FFFFFF	9.21	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#474333

Deuteranopia (green-blind)

#504B34

Tritanopia (blue-blind)

#6C383B

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #643e34;
/* rgb */ color: rgb(100, 62, 52);
/* oklch */ color: oklch(40.6% 0.056 35.5);

Tailwind

colors: {
  custom: {
    50: '#92736b',
    500: '#643e34',
    950: '#000000',
  },
}

SCSS

$custom: #643e34;
$custom-light: #92736b;
$custom-dark: #000000;

JSON

{
  "hex": "#643e34",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 52
  },
  "hsl": {
    "h": 12.5,
    "s": 31.579,
    "l": 29.804
  },
  "oklch": {
    "l": 0.40586,
    "c": 0.0564,
    "h": 35.5
  },
  "luminance": 0.06403
}

Semantic roles & 50–950 ramp

primary

#643E34

secondary

#5F8A95

accent

#B2C860

background

#F9F7F6

surface

#F1EDEB

border

#CBC8C6

text

#0D0806

muted

#7E7B7A

Preview Lab

Preview with #643E34

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

Preview Lab → · Contrast checker → · Palette generator →