#643C63#643C63

#643C63 is a dark, moderate purple. Relative luminance 0.068; OKLCH L 41.9% C 0.080 H 327.8°. Best body text is #FFFFFF at 8.87:1 contrast (WCAG AA passes).

Color values

HEX	#643C63
RGB	rgb(100, 60, 99)
HSL	hsl(302, 25%, 31%)
HSV	hsv(302, 40%, 39%)
CMYK	cmyk(0%, 40%, 1%, 60.8%)
CIE-LAB	lab(31.45, 24.43, -15.77)
CIE-LCH	lch(31.45, 29.08, 327.16°)
OKLab	oklab(41.88% 0.068 -0.0429)
OKLCH	oklch(41.88% 0.08 327.8)
XYZ	xyz(9.1234, 6.8423, 12.6421)
Luminance	0.0684 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C63 #3C643D

analogous

#513C64 #643C63 #643C4F

triadic

#643C63 #63643C #3C6364

tetradic

#643C63 #64513C #3C643D #3C4F64

square

#643C63 #64513C #3C643D #3C4F64

split-complementary

#643C63 #4F643C #3C6451

monochromatic

#180E17 #3E253D #643C63 #8A5389 #AA71A8

Accessibility & contrast

On white

8.87

#643C63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#643C63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C63

8.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C63	#FFFFFF	#000000	##FFFFFF
##643C63	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)

#394764

Deuteranopia (green-blind)

#444C62

Tritanopia (blue-blind)

#663F4B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #643c63;
/* rgb */ color: rgb(100, 60, 99);
/* oklch */ color: oklch(41.9% 0.080 327.8);

Tailwind

colors: {
  custom: {
    50: '#91738f',
    500: '#643c63',
    950: '#000000',
  },
}

SCSS

$custom: #643c63;
$custom-light: #91738f;
$custom-dark: #000000;

JSON

{
  "hex": "#643c63",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 99
  },
  "hsl": {
    "h": 301.5,
    "s": 25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.41884,
    "c": 0.08038,
    "h": 327.8
  },
  "luminance": 0.06842
}

Semantic roles & 50–950 ramp

primary

#643C63

secondary

#689469

accent

#C16966

background

#F9F7F8

surface

#F1EDF0

border

#CBC8CB

text

#0D080C

muted

#7E7B7D

Preview Lab

Preview with #643C63

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

Preview Lab → · Contrast checker → · Palette generator →