#643C72#643C72

#643C72 is a dark, moderate purple. Relative luminance 0.072; OKLCH L 42.7% C 0.098 H 316.9°. Best body text is #FFFFFF at 8.64:1 contrast (WCAG AA passes).

Color values

HEX	#643C72
RGB	rgb(100, 60, 114)
HSL	hsl(284, 31%, 34%)
HSV	hsv(284, 47%, 45%)
CMYK	cmyk(12.3%, 47.4%, 0%, 55.3%)
CIE-LAB	lab(32.16, 27.73, -24.18)
CIE-LCH	lch(32.16, 36.80, 318.91°)
OKLab	oklab(42.65% 0.0714 -0.0669)
OKLCH	oklch(42.65% 0.098 316.9)
XYZ	xyz(9.9082, 7.1562, 16.7757)
Luminance	0.0716 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C72 #4A723C

analogous

#493C72 #643C72 #723C65

triadic

#643C72 #72643C #3C7264

tetradic

#643C72 #72493C #4A723C #3C6572

square

#643C72 #72493C #4A723C #3C6572

split-complementary

#643C72 #65723C #3C7249

monochromatic

#1E1222 #41274A #643C72 #87519A #A473B5

Accessibility & contrast

On white

8.64

#643C72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#643C72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C72

8.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C72	#FFFFFF	#000000	##FFFFFF
##643C72	1.00	8.64	2.43	8.64
#FFFFFF	8.64	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#324974

Deuteranopia (green-blind)

#3D4D70

Tritanopia (blue-blind)

#644351

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #643c72;
/* rgb */ color: rgb(100, 60, 114);
/* oklch */ color: oklch(42.7% 0.098 316.9);

Tailwind

colors: {
  custom: {
    50: '#91739b',
    500: '#643c72',
    950: '#000000',
  },
}

SCSS

$custom: #643c72;
$custom-light: #91739b;
$custom-dark: #000000;

JSON

{
  "hex": "#643c72",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 114
  },
  "hsl": {
    "h": 284.444,
    "s": 31.034,
    "l": 34.118
  },
  "oklch": {
    "l": 0.42654,
    "c": 0.09787,
    "h": 316.9
  },
  "luminance": 0.07156
}

Semantic roles & 50–950 ramp

primary

#643C72

secondary

#789F6A

accent

#C7617B

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643C72

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

Preview Lab → · Contrast checker → · Palette generator →