#643F64#643F64

#643F64 is a dark, moderate purple. Relative luminance 0.072; OKLCH L 42.5% C 0.075 H 326.8°. Best body text is #FFFFFF at 8.62:1 contrast (WCAG AA passes).

Color values

HEX	#643F64
RGB	rgb(100, 63, 100)
HSL	hsl(300, 23%, 32%)
HSV	hsv(300, 37%, 39%)
CMYK	cmyk(0%, 37%, 0%, 60.8%)
CIE-LAB	lab(32.22, 22.81, -15.21)
CIE-LCH	lch(32.22, 27.42, 326.31°)
OKLab	oklab(42.49% 0.0632 -0.0413)
OKLCH	oklch(42.49% 0.075 326.8)
XYZ	xyz(9.3331, 7.1848, 12.9493)
Luminance	0.0718 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F64 #3F643F

analogous

#523F64 #643F64 #643F52

triadic

#643F64 #64643F #3F6464

tetradic

#643F64 #64523F #3F643F #3F5264

square

#643F64 #64523F #3F643F #3F5264

split-complementary

#643F64 #52643F #3F6452

monochromatic

#191019 #3E273E #643F64 #8A578A #A875A8

Accessibility & contrast

On white

8.62

#643F64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#643F64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F64

8.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F64	#FFFFFF	#000000	##FFFFFF
##643F64	1.00	8.62	2.44	8.62
#FFFFFF	8.62	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C4965

Deuteranopia (green-blind)

#464D63

Tritanopia (blue-blind)

#66424D

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #643f64;
/* rgb */ color: rgb(100, 63, 100);
/* oklch */ color: oklch(42.5% 0.075 326.8);

Tailwind

colors: {
  custom: {
    50: '#917590',
    500: '#643f64',
    950: '#000000',
  },
}

SCSS

$custom: #643f64;
$custom-light: #917590;
$custom-dark: #000000;

JSON

{
  "hex": "#643f64",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 100
  },
  "hsl": {
    "h": 300,
    "s": 22.699,
    "l": 31.961
  },
  "oklch": {
    "l": 0.42485,
    "c": 0.07548,
    "h": 326.8
  },
  "luminance": 0.07184
}

Semantic roles & 50–950 ramp

primary

#643F64

secondary

#6B946B

accent

#BF6969

background

#F8F7F8

surface

#F0EDF0

border

#CBC8CB

text

#0D080C

muted

#7D7B7D

Preview Lab

Preview with #643F64

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

Preview Lab → · Contrast checker → · Palette generator →