#643A36#643A36

#643A36 is a dark, moderate red. Relative luminance 0.060; OKLCH L 39.8% C 0.060 H 26.0°. Best body text is #FFFFFF at 9.54:1 contrast (WCAG AA passes).

Color values

HEX	#643A36
RGB	rgb(100, 58, 54)
HSL	hsl(5, 30%, 30%)
HSV	hsv(5, 46%, 39%)
CMYK	cmyk(0%, 42%, 46%, 60.8%)
CIE-LAB	lab(29.42, 18.07, 10.43)
CIE-LCH	lch(29.42, 20.86, 30.00°)
OKLab	oklab(39.84% 0.0544 0.0265)
OKLCH	oklch(39.84% 0.06 26)
XYZ	xyz(7.4348, 6.0024, 4.2563)
Luminance	0.0600 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A36 #366064

analogous

#643649 #643A36 #645136

triadic

#643A36 #36643A #3A3664

tetradic

#643A36 #496436 #366064 #513664

square

#643A36 #496436 #366064 #513664

split-complementary

#643A36 #366451 #364964

monochromatic

#150C0B #3C2321 #643A36 #8C514B #AD6D67

Accessibility & contrast

On white

9.54

#643A36 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#643A36 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A36

9.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A36	#FFFFFF	#000000	##FFFFFF
##643A36	1.00	9.54	2.20	9.54
#FFFFFF	9.54	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#434036

Deuteranopia (green-blind)

#4D4935

Tritanopia (blue-blind)

#6C3439

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #643a36;
/* rgb */ color: rgb(100, 58, 54);
/* oklch */ color: oklch(39.8% 0.060 26.0);

Tailwind

colors: {
  custom: {
    50: '#92716d',
    500: '#643a36',
    950: '#000000',
  },
}

SCSS

$custom: #643a36;
$custom-light: #92716d;
$custom-dark: #000000;

JSON

{
  "hex": "#643a36",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 54
  },
  "hsl": {
    "h": 5.217,
    "s": 29.87,
    "l": 30.196
  },
  "oklch": {
    "l": 0.39841,
    "c": 0.06045,
    "h": 26
  },
  "luminance": 0.06002
}

Semantic roles & 50–950 ramp

primary

#643A36

secondary

#619095

accent

#BDC662

background

#F9F6F6

surface

#F1ECEB

border

#CBC7C6

text

#0D0707

muted

#7E7A7A

Preview Lab

Preview with #643A36

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

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