#643C66#643C66

#643C66 is a dark, moderate purple. Relative luminance 0.069; OKLCH L 42.0% C 0.084 H 325.3°. Best body text is #FFFFFF at 8.82:1 contrast (WCAG AA passes).

Color values

HEX	#643C66
RGB	rgb(100, 60, 102)
HSL	hsl(297, 26%, 32%)
HSV	hsv(297, 41%, 40%)
CMYK	cmyk(2%, 41.2%, 0%, 60%)
CIE-LAB	lab(31.58, 25.06, -17.48)
CIE-LCH	lch(31.58, 30.55, 325.11°)
OKLab	oklab(42.03% 0.0688 -0.0477)
OKLCH	oklch(42.03% 0.084 325.3)
XYZ	xyz(9.2694, 6.9007, 13.4115)
Luminance	0.0690 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C66 #3E663C

analogous

#4F3C66 #643C66 #663C53

triadic

#643C66 #66643C #3C6664

tetradic

#643C66 #664F3C #3E663C #3C5366

square

#643C66 #664F3C #3E663C #3C5366

split-complementary

#643C66 #53663C #3C664F

monochromatic

#180F19 #3E253F #643C66 #8A538D #A971AB

Accessibility & contrast

On white

8.82

#643C66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#643C66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C66

8.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C66	#FFFFFF	#000000	##FFFFFF
##643C66	1.00	8.82	2.38	8.82
#FFFFFF	8.82	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#384768

Deuteranopia (green-blind)

#434C65

Tritanopia (blue-blind)

#66404C

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #643c66;
/* rgb */ color: rgb(100, 60, 102);
/* oklch */ color: oklch(42.0% 0.084 325.3);

Tailwind

colors: {
  custom: {
    50: '#917391',
    500: '#643c66',
    950: '#000000',
  },
}

SCSS

$custom: #643c66;
$custom-light: #917391;
$custom-dark: #000000;

JSON

{
  "hex": "#643c66",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 102
  },
  "hsl": {
    "h": 297.143,
    "s": 25.926,
    "l": 31.765
  },
  "oklch": {
    "l": 0.42029,
    "c": 0.08372,
    "h": 325.3
  },
  "luminance": 0.069
}

Semantic roles & 50–950 ramp

primary

#643C66

secondary

#6A9668

accent

#C2656A

background

#F9F7F8

surface

#F1EDF0

border

#CBC8CB

text

#0D080D

muted

#7E7B7D

Preview Lab

Preview with #643C66

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

Preview Lab → · Contrast checker → · Palette generator →