#643133#643133

#643133 is a dark, moderate red. Relative luminance 0.051; OKLCH L 38.1% C 0.074 H 18.7°. Best body text is #FFFFFF at 10.35:1 contrast (WCAG AA passes).

Color values

HEX	#643133
RGB	rgb(100, 49, 51)
HSL	hsl(358, 34%, 29%)
HSV	hsv(358, 51%, 39%)
CMYK	cmyk(0%, 51%, 49%, 60.8%)
CIE-LAB	lab(27.15, 23.13, 9.27)
CIE-LCH	lch(27.15, 24.92, 21.84°)
OKLab	oklab(38.08% 0.0696 0.0236)
OKLCH	oklch(38.08% 0.074 18.7)
XYZ	xyz(6.9518, 5.1457, 3.7584)
Luminance	0.0515 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643133 #316462

analogous

#64314D #643133 #644931

triadic

#643133 #336431 #313364

tetradic

#643133 #4D6431 #316462 #493164

square

#643133 #4D6431 #316462 #493164

split-complementary

#643133 #316449 #314D64

monochromatic

#150A0A #3B1D1E #643133 #8D4548 #B15F62

Accessibility & contrast

On white

10.35

#643133 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#643133 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643133

10.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643133	#FFFFFF	#000000	##FFFFFF
##643133	1.00	10.35	2.03	10.35
#FFFFFF	10.35	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C3A33

Deuteranopia (green-blind)

#484432

Tritanopia (blue-blind)

#6D2A32

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #643133;
/* rgb */ color: rgb(100, 49, 51);
/* oklch */ color: oklch(38.1% 0.074 18.7);

Tailwind

colors: {
  custom: {
    50: '#936a6a',
    500: '#643133',
    950: '#000000',
  },
}

SCSS

$custom: #643133;
$custom-light: #936a6a;
$custom-dark: #000000;

JSON

{
  "hex": "#643133",
  "rgb": {
    "r": 100,
    "g": 49,
    "b": 51
  },
  "hsl": {
    "h": 357.647,
    "s": 34.228,
    "l": 29.216
  },
  "oklch": {
    "l": 0.38083,
    "c": 0.07352,
    "h": 18.7
  },
  "luminance": 0.05145
}

Semantic roles & 50–950 ramp

primary

#643133

secondary

#5C9593

accent

#CAC65D

background

#F9F6F6

surface

#F2EBEB

border

#CCC6C6

text

#0D0606

muted

#7E7A7A

Preview Lab

Preview with #643133

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

Preview Lab → · Contrast checker → · Palette generator →