#643B35#643B35

#643B35 is a dark, muted red. Relative luminance 0.061; OKLCH L 40.0% C 0.059 H 28.9°. Best body text is #FFFFFF at 9.46:1 contrast (WCAG AA passes).

Color values

HEX	#643B35
RGB	rgb(100, 59, 53)
HSL	hsl(8, 31%, 30%)
HSV	hsv(8, 47%, 39%)
CMYK	cmyk(0%, 41%, 47%, 60.8%)
CIE-LAB	lab(29.65, 17.33, 11.40)
CIE-LCH	lch(29.65, 20.74, 33.33°)
OKLab	oklab(40.01% 0.052 0.0288)
OKLCH	oklch(40.01% 0.059 28.9)
XYZ	xyz(7.4625, 6.0949, 4.1509)
Luminance	0.0609 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B35 #355E64

analogous

#643546 #643B35 #645335

triadic

#643B35 #35643B #3B3564

tetradic

#643B35 #466435 #355E64 #533564

square

#643B35 #466435 #355E64 #533564

split-complementary

#643B35 #356453 #354664

monochromatic

#140C0B #3C2320 #643B35 #8C534A #AE6F66

Accessibility & contrast

On white

9.46

#643B35 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#643B35 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B35

9.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B35	#FFFFFF	#000000	##FFFFFF
##643B35	1.00	9.46	2.22	9.46
#FFFFFF	9.46	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#444134

Deuteranopia (green-blind)

#4E4934

Tritanopia (blue-blind)

#6C353A

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #643b35;
/* rgb */ color: rgb(100, 59, 53);
/* oklch */ color: oklch(40.0% 0.059 28.9);

Tailwind

colors: {
  custom: {
    50: '#92716c',
    500: '#643b35',
    950: '#000000',
  },
}

SCSS

$custom: #643b35;
$custom-light: #92716c;
$custom-dark: #000000;

JSON

{
  "hex": "#643b35",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 53
  },
  "hsl": {
    "h": 7.66,
    "s": 30.719,
    "l": 30
  },
  "oklch": {
    "l": 0.40011,
    "c": 0.05944,
    "h": 28.9
  },
  "luminance": 0.06094
}

Semantic roles & 50–950 ramp

primary

#643B35

secondary

#608E95

accent

#BAC761

background

#F9F6F6

surface

#F1ECEB

border

#CBC7C6

text

#0D0706

muted

#7E7A7A

Preview Lab

Preview with #643B35

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

Preview Lab → · Contrast checker → · Palette generator →