#643E45#643E45

#643E45 is a dark, muted red. Relative luminance 0.066; OKLCH L 41.1% C 0.054 H 7.7°. Best body text is #FFFFFF at 9.06:1 contrast (WCAG AA passes).

Color values

HEX	#643E45
RGB	rgb(100, 62, 69)
HSL	hsl(349, 23%, 32%)
HSV	hsv(349, 38%, 39%)
CMYK	cmyk(0%, 38%, 31%, 60.8%)
CIE-LAB	lab(30.84, 17.70, 2.69)
CIE-LCH	lch(30.84, 17.90, 8.66°)
OKLab	oklab(41.06% 0.0536 0.0073)
OKLCH	oklch(41.06% 0.054 7.7)
XYZ	xyz(8.0526, 6.5848, 6.4759)
Luminance	0.0658 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E45 #3E645D

analogous

#643E58 #643E45 #644A3E

triadic

#643E45 #45643E #3E4564

tetradic

#643E45 #58643E #3E645D #4A3E64

square

#643E45 #58643E #3E645D #4A3E64

split-complementary

#643E45 #3E644A #3E5864

monochromatic

#180F11 #3E272B #643E45 #8A555F #A9747D

Accessibility & contrast

On white

9.06

#643E45 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#643E45 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E45

9.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E45	#FFFFFF	#000000	##FFFFFF
##643E45	1.00	9.06	2.32	9.06
#FFFFFF	9.06	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#444445

Deuteranopia (green-blind)

#4D4B44

Tritanopia (blue-blind)

#6B3B40

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #643e45;
/* rgb */ color: rgb(100, 62, 69);
/* oklch */ color: oklch(41.1% 0.054 7.7);

Tailwind

colors: {
  custom: {
    50: '#917478',
    500: '#643e45',
    950: '#000000',
  },
}

SCSS

$custom: #643e45;
$custom-light: #917478;
$custom-dark: #000000;

JSON

{
  "hex": "#643e45",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 69
  },
  "hsl": {
    "h": 348.947,
    "s": 23.457,
    "l": 31.765
  },
  "oklch": {
    "l": 0.41063,
    "c": 0.0541,
    "h": 7.7
  },
  "luminance": 0.06584
}

Semantic roles & 50–950 ramp

primary

#643E45

secondary

#6A948C

accent

#C0B068

background

#F9F7F7

surface

#F1EDED

border

#CBC8C8

text

#0D0809

muted

#7E7B7B

Preview Lab

Preview with #643E45

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

Preview Lab → · Contrast checker → · Palette generator →