#643128#643128

#643128 is a dark, moderate red. Relative luminance 0.051; OKLCH L 37.8% C 0.076 H 31.3°. Best body text is #FFFFFF at 10.44:1 contrast (WCAG AA passes).

Color values

HEX	#643128
RGB	rgb(100, 49, 40)
HSL	hsl(9, 43%, 27%)
HSV	hsv(9, 60%, 39%)
CMYK	cmyk(0%, 51%, 60%, 60.8%)
CIE-LAB	lab(26.90, 21.99, 16.17)
CIE-LCH	lch(26.90, 27.30, 36.32°)
OKLab	oklab(37.82% 0.0647 0.0393)
OKLCH	oklch(37.82% 0.076 31.3)
XYZ	xyz(6.7374, 5.0599, 2.6289)
Luminance	0.0506 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643128 #285B64

analogous

#64283D #643128 #644F28

triadic

#643128 #286431 #312864

tetradic

#643128 #3D6428 #285B64 #4F2864

square

#643128 #3D6428 #285B64 #4F2864

split-complementary

#643128 #28644F #283D64

monochromatic

#160B09 #381C17 #643128 #904639 #B85E4E

Accessibility & contrast

On white

10.44

#643128 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#643128 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643128

10.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643128	#FFFFFF	#000000	##FFFFFF
##643128	1.00	10.44	2.01	10.44
#FFFFFF	10.44	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D3927

Deuteranopia (green-blind)

#4A4427

Tritanopia (blue-blind)

#6D292F

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #643128;
/* rgb */ color: rgb(100, 49, 40);
/* oklch */ color: oklch(37.8% 0.076 31.3);

Tailwind

colors: {
  custom: {
    50: '#946a62',
    500: '#643128',
    950: '#000000',
  },
}

SCSS

$custom: #643128;
$custom-light: #946a62;
$custom-dark: #000000;

JSON

{
  "hex": "#643128",
  "rgb": {
    "r": 100,
    "g": 49,
    "b": 40
  },
  "hsl": {
    "h": 9,
    "s": 42.857,
    "l": 27.451
  },
  "oklch": {
    "l": 0.37821,
    "c": 0.07568,
    "h": 31.3
  },
  "luminance": 0.05059
}

Semantic roles & 50–950 ramp

primary

#643128

secondary

#518C97

accent

#C0D355

background

#F9F6F5

surface

#F2EBEA

border

#CCC6C6

text

#0E0605

muted

#7E7A79

Preview Lab

Preview with #643128

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

Preview Lab → · Contrast checker → · Palette generator →