#643E46#643E46

#643E46 is a dark, muted red. Relative luminance 0.066; OKLCH L 41.1% C 0.054 H 6.0°. Best body text is #FFFFFF at 9.05:1 contrast (WCAG AA passes).

Color values

HEX	#643E46
RGB	rgb(100, 62, 70)
HSL	hsl(347, 23%, 32%)
HSV	hsv(347, 38%, 39%)
CMYK	cmyk(0%, 38%, 30%, 60.8%)
CIE-LAB	lab(30.87, 17.85, 2.09)
CIE-LCH	lch(30.87, 17.97, 6.67°)
OKLab	oklab(41.1% 0.054 0.0057)
OKLCH	oklch(41.1% 0.054 6)
XYZ	xyz(8.0839, 6.5973, 6.6408)
Luminance	0.0660 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E46 #3E645C

analogous

#643E59 #643E46 #64493E

triadic

#643E46 #46643E #3E4664

tetradic

#643E46 #59643E #3E645C #493E64

square

#643E46 #59643E #3E645C #493E64

split-complementary

#643E46 #3E6449 #3E5964

monochromatic

#180F11 #3E272C #643E46 #8A5560 #A9747F

Accessibility & contrast

On white

9.05

#643E46 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.32

#643E46 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E46

9.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E46	#FFFFFF	#000000	##FFFFFF
##643E46	1.00	9.05	2.32	9.05
#FFFFFF	9.05	1.00	21.00	1.00
#000000	2.32	21.00	1.00	21.00
##FFFFFF	9.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#444446

Deuteranopia (green-blind)

#4D4B45

Tritanopia (blue-blind)

#6A3B41

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #643e46;
/* rgb */ color: rgb(100, 62, 70);
/* oklch */ color: oklch(41.1% 0.054 6.0);

Tailwind

colors: {
  custom: {
    50: '#917479',
    500: '#643e46',
    950: '#000000',
  },
}

SCSS

$custom: #643e46;
$custom-light: #917479;
$custom-dark: #000000;

JSON

{
  "hex": "#643e46",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 70
  },
  "hsl": {
    "h": 347.368,
    "s": 23.457,
    "l": 31.765
  },
  "oklch": {
    "l": 0.41095,
    "c": 0.05434,
    "h": 6
  },
  "luminance": 0.06597
}

Semantic roles & 50–950 ramp

primary

#643E46

secondary

#6A948B

accent

#C0AD68

background

#F9F7F7

surface

#F1EDED

border

#CBC8C8

text

#0D0809

muted

#7E7B7B

Preview Lab

Preview with #643E46

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

Preview Lab → · Contrast checker → · Palette generator →