#643237#643237

#643237 is a dark, moderate red. Relative luminance 0.053; OKLCH L 38.4% C 0.072 H 14.7°. Best body text is #FFFFFF at 10.23:1 contrast (WCAG AA passes).

Color values

HEX	#643237
RGB	rgb(100, 50, 55)
HSL	hsl(354, 33%, 29%)
HSV	hsv(354, 50%, 39%)
CMYK	cmyk(0%, 50%, 45%, 60.8%)
CIE-LAB	lab(27.48, 23.02, 7.09)
CIE-LCH	lch(27.48, 24.08, 17.12°)
OKLab	oklab(38.37% 0.0696 0.0183)
OKLCH	oklch(38.37% 0.072 14.7)
XYZ	xyz(7.0861, 5.2670, 4.2571)
Luminance	0.0527 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643237 #32645F

analogous

#643250 #643237 #644632

triadic

#643237 #376432 #323764

tetradic

#643237 #506432 #32645F #463264

square

#643237 #506432 #32645F #463264

split-complementary

#643237 #326446 #325064

monochromatic

#140A0B #3B1E21 #643237 #8D464D #B06169

Accessibility & contrast

On white

10.23

#643237 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#643237 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643237

10.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643237	#FFFFFF	#000000	##FFFFFF
##643237	1.00	10.23	2.05	10.23
#FFFFFF	10.23	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C3B37

Deuteranopia (green-blind)

#484536

Tritanopia (blue-blind)

#6C2C34

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #643237;
/* rgb */ color: rgb(100, 50, 55);
/* oklch */ color: oklch(38.4% 0.072 14.7);

Tailwind

colors: {
  custom: {
    50: '#936b6d',
    500: '#643237',
    950: '#000000',
  },
}

SCSS

$custom: #643237;
$custom-light: #936b6d;
$custom-dark: #000000;

JSON

{
  "hex": "#643237",
  "rgb": {
    "r": 100,
    "g": 50,
    "b": 55
  },
  "hsl": {
    "h": 354,
    "s": 33.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.38372,
    "c": 0.07198,
    "h": 14.7
  },
  "luminance": 0.05266
}

Semantic roles & 50–950 ramp

primary

#643237

secondary

#5D958F

accent

#C9BF5E

background

#F9F6F6

surface

#F2EBEB

border

#CCC6C6

text

#0D0707

muted

#7E7A7A

Preview Lab

Preview with #643237

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

Preview Lab → · Contrast checker → · Palette generator →