#643A35#643A35

#643A35 is a dark, moderate red. Relative luminance 0.060; OKLCH L 39.8% C 0.061 H 27.4°. Best body text is #FFFFFF at 9.55:1 contrast (WCAG AA passes).

Color values

HEX	#643A35
RGB	rgb(100, 58, 53)
HSL	hsl(6, 31%, 30%)
HSV	hsv(6, 47%, 39%)
CMYK	cmyk(0%, 42%, 47%, 60.8%)
CIE-LAB	lab(29.39, 17.94, 11.05)
CIE-LCH	lch(29.39, 21.07, 31.62°)
OKLab	oklab(39.82% 0.0539 0.0279)
OKLCH	oklch(39.82% 0.061 27.4)
XYZ	xyz(7.4116, 5.9931, 4.1339)
Luminance	0.0599 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A35 #355F64

analogous

#643547 #643A35 #645235

triadic

#643A35 #35643A #3A3564

tetradic

#643A35 #476435 #355F64 #523564

square

#643A35 #476435 #355F64 #523564

split-complementary

#643A35 #356452 #354764

monochromatic

#140C0B #3C2320 #643A35 #8C514A #AE6D66

Accessibility & contrast

On white

9.55

#643A35 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#643A35 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A35

9.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A35	#FFFFFF	#000000	##FFFFFF
##643A35	1.00	9.55	2.20	9.55
#FFFFFF	9.55	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#434034

Deuteranopia (green-blind)

#4D4934

Tritanopia (blue-blind)

#6C3439

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #643a35;
/* rgb */ color: rgb(100, 58, 53);
/* oklch */ color: oklch(39.8% 0.061 27.4);

Tailwind

colors: {
  custom: {
    50: '#92706c',
    500: '#643a35',
    950: '#000000',
  },
}

SCSS

$custom: #643a35;
$custom-light: #92706c;
$custom-dark: #000000;

JSON

{
  "hex": "#643a35",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 53
  },
  "hsl": {
    "h": 6.383,
    "s": 30.719,
    "l": 30
  },
  "oklch": {
    "l": 0.39815,
    "c": 0.06069,
    "h": 27.4
  },
  "luminance": 0.05992
}

Semantic roles & 50–950 ramp

primary

#643A35

secondary

#608F95

accent

#BCC761

background

#F9F6F6

surface

#F1ECEB

border

#CBC7C6

text

#0D0706

muted

#7E7A7A

Preview Lab

Preview with #643A35

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

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