#643A34#643A34

#643A34 is a dark, moderate red. Relative luminance 0.060; OKLCH L 39.8% C 0.061 H 28.8°. Best body text is #FFFFFF at 9.56:1 contrast (WCAG AA passes).

Color values

HEX	#643A34
RGB	rgb(100, 58, 52)
HSL	hsl(8, 32%, 30%)
HSV	hsv(8, 48%, 39%)
CMYK	cmyk(0%, 42%, 48%, 60.8%)
CIE-LAB	lab(29.37, 17.82, 11.66)
CIE-LCH	lch(29.37, 21.30, 33.20°)
OKLab	oklab(39.79% 0.0534 0.0294)
OKLCH	oklch(39.79% 0.061 28.8)
XYZ	xyz(7.3888, 5.9840, 4.0140)
Luminance	0.0598 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A34 #345E64

analogous

#643446 #643A34 #645234

triadic

#643A34 #34643A #3A3464

tetradic

#643A34 #466434 #345E64 #523464

square

#643A34 #466434 #345E64 #523464

split-complementary

#643A34 #346452 #344664

monochromatic

#140C0A #3C231F #643A34 #8C5149 #AE6D64

Accessibility & contrast

On white

9.56

#643A34 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#643A34 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A34

9.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A34	#FFFFFF	#000000	##FFFFFF
##643A34	1.00	9.56	2.20	9.56
#FFFFFF	9.56	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#434033

Deuteranopia (green-blind)

#4E4933

Tritanopia (blue-blind)

#6C3439

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #643a34;
/* rgb */ color: rgb(100, 58, 52);
/* oklch */ color: oklch(39.8% 0.061 28.8);

Tailwind

colors: {
  custom: {
    50: '#92706b',
    500: '#643a34',
    950: '#000000',
  },
}

SCSS

$custom: #643a34;
$custom-light: #92706b;
$custom-dark: #000000;

JSON

{
  "hex": "#643a34",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 52
  },
  "hsl": {
    "h": 7.5,
    "s": 31.579,
    "l": 29.804
  },
  "oklch": {
    "l": 0.3979,
    "c": 0.06098,
    "h": 28.8
  },
  "luminance": 0.05983
}

Semantic roles & 50–950 ramp

primary

#643A34

secondary

#5F8E95

accent

#BBC860

background

#F9F6F6

surface

#F1ECEB

border

#CBC7C6

text

#0D0706

muted

#7E7A7A

Preview Lab

Preview with #643A34

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

Preview Lab → · Contrast checker → · Palette generator →