#643A72#643A72

#643A72 is a dark, moderate purple. Relative luminance 0.070; OKLCH L 42.3% C 0.102 H 317.2°. Best body text is #FFFFFF at 8.79:1 contrast (WCAG AA passes).

Color values

HEX	#643A72
RGB	rgb(100, 58, 114)
HSL	hsl(285, 33%, 34%)
HSV	hsv(285, 49%, 45%)
CMYK	cmyk(12.3%, 49.1%, 0%, 55.3%)
CIE-LAB	lab(31.69, 28.92, -24.91)
CIE-LCH	lch(31.69, 38.17, 319.26°)
OKLab	oklab(42.31% 0.0746 -0.069)
OKLCH	oklch(42.31% 0.102 317.2)
XYZ	xyz(9.8054, 6.9506, 16.7414)
Luminance	0.0695 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A72 #48723A

analogous

#483A72 #643A72 #723A64

triadic

#643A72 #72643A #3A7264

tetradic

#643A72 #72483A #48723A #3A6472

square

#643A72 #72483A #48723A #3A6472

split-complementary

#643A72 #64723A #3A7248

monochromatic

#1D1121 #402549 #643A72 #884F9B #A570B6

Accessibility & contrast

On white

8.79

#643A72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#643A72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A72

8.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A72	#FFFFFF	#000000	##FFFFFF
##643A72	1.00	8.79	2.39	8.79
#FFFFFF	8.79	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304874

Deuteranopia (green-blind)

#3C4C70

Tritanopia (blue-blind)

#644250

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #643a72;
/* rgb */ color: rgb(100, 58, 114);
/* oklch */ color: oklch(42.3% 0.102 317.2);

Tailwind

colors: {
  custom: {
    50: '#91719b',
    500: '#643a72',
    950: '#000000',
  },
}

SCSS

$custom: #643a72;
$custom-light: #91719b;
$custom-dark: #000000;

JSON

{
  "hex": "#643a72",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 114
  },
  "hsl": {
    "h": 285,
    "s": 32.558,
    "l": 33.725
  },
  "oklch": {
    "l": 0.42307,
    "c": 0.10162,
    "h": 317.2
  },
  "luminance": 0.0695
}

Semantic roles & 50–950 ramp

primary

#643A72

secondary

#76A068

accent

#C95F79

background

#F9F6F9

surface

#F1ECF2

border

#CBC7CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643A72

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

Preview Lab → · Contrast checker → · Palette generator →