#643D72#643D72

#643D72 is a dark, moderate purple. Relative luminance 0.073; OKLCH L 42.8% C 0.096 H 316.7°. Best body text is #FFFFFF at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#643D72
RGB	rgb(100, 61, 114)
HSL	hsl(284, 30%, 34%)
HSV	hsv(284, 46%, 45%)
CMYK	cmyk(12.3%, 46.5%, 0%, 55.3%)
CIE-LAB	lab(32.40, 27.13, -23.81)
CIE-LCH	lch(32.40, 36.10, 318.73°)
OKLab	oklab(42.83% 0.0698 -0.0659)
OKLCH	oklch(42.83% 0.096 316.7)
XYZ	xyz(9.9611, 7.2620, 16.7933)
Luminance	0.0726 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D72 #4B723D

analogous

#4A3D72 #643D72 #723D66

triadic

#643D72 #72643D #3D7264

tetradic

#643D72 #724A3D #4B723D #3D6672

square

#643D72 #724A3D #4B723D #3D6672

split-complementary

#643D72 #66723D #3D724A

monochromatic

#1E1222 #41284A #643D72 #87529A #A475B5

Accessibility & contrast

On white

8.56

#643D72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#643D72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D72

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D72	#FFFFFF	#000000	##FFFFFF
##643D72	1.00	8.56	2.45	8.56
#FFFFFF	8.56	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#344A74

Deuteranopia (green-blind)

#3E4D70

Tritanopia (blue-blind)

#644452

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #643d72;
/* rgb */ color: rgb(100, 61, 114);
/* oklch */ color: oklch(42.8% 0.096 316.7);

Tailwind

colors: {
  custom: {
    50: '#91739b',
    500: '#643d72',
    950: '#000000',
  },
}

SCSS

$custom: #643d72;
$custom-light: #91739b;
$custom-dark: #000000;

JSON

{
  "hex": "#643d72",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 114
  },
  "hsl": {
    "h": 284.151,
    "s": 30.286,
    "l": 34.314
  },
  "oklch": {
    "l": 0.42831,
    "c": 0.09598,
    "h": 316.7
  },
  "luminance": 0.07262
}

Semantic roles & 50–950 ramp

primary

#643D72

secondary

#799F6C

accent

#C7617C

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643D72

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

Preview Lab → · Contrast checker → · Palette generator →