#643E57#643E57

#643E57 is a dark, moderate pink. Relative luminance 0.068; OKLCH L 41.7% C 0.064 H 340.6°. Best body text is #FFFFFF at 8.87:1 contrast (WCAG AA passes).

Color values

HEX	#643E57
RGB	rgb(100, 62, 87)
HSL	hsl(321, 23%, 32%)
HSV	hsv(321, 38%, 39%)
CMYK	cmyk(0%, 38%, 13%, 60.8%)
CIE-LAB	lab(31.45, 20.81, -8.06)
CIE-LCH	lch(31.45, 22.32, 338.83°)
OKLab	oklab(41.72% 0.0607 -0.0214)
OKLCH	oklch(41.72% 0.064 340.6)
XYZ	xyz(8.6985, 6.8432, 9.8777)
Luminance	0.0684 (WCAG relative)
Temperature	warm
Family	pink

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E57 #3E644B

analogous

#5E3E64 #643E57 #643E44

triadic

#643E57 #57643E #3E5764

tetradic

#643E57 #645E3E #3E644B #3E4464

square

#643E57 #645E3E #3E644B #3E4464

split-complementary

#643E57 #44643E #3E645E

monochromatic

#180F15 #3E2736 #643E57 #8A5578 #A97497

Accessibility & contrast

On white

8.87

#643E57 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#643E57 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E57

8.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E57	#FFFFFF	#000000	##FFFFFF
##643E57	1.00	8.87	2.37	8.87
#FFFFFF	8.87	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#404658

Deuteranopia (green-blind)

#494C56

Tritanopia (blue-blind)

#683E47

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #643e57;
/* rgb */ color: rgb(100, 62, 87);
/* oklch */ color: oklch(41.7% 0.064 340.6);

Tailwind

colors: {
  custom: {
    50: '#917486',
    500: '#643e57',
    950: '#000000',
  },
}

SCSS

$custom: #643e57;
$custom-light: #917486;
$custom-dark: #000000;

JSON

{
  "hex": "#643e57",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 87
  },
  "hsl": {
    "h": 320.526,
    "s": 23.457,
    "l": 31.765
  },
  "oklch": {
    "l": 0.41723,
    "c": 0.06439,
    "h": 340.6
  },
  "luminance": 0.06843
}

Semantic roles & 50–950 ramp

primary

#643E57

secondary

#6A9478

accent

#C08668

background

#F8F7F8

surface

#F0EDEF

border

#CBC8CA

text

#0D080B

muted

#7D7B7C

Preview Lab

Preview with #643E57

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

Preview Lab → · Contrast checker → · Palette generator →