#643D73#643D73

#643D73 is a dark, moderate purple. Relative luminance 0.073; OKLCH L 42.9% C 0.097 H 316.1°. Best body text is #FFFFFF at 8.55:1 contrast (WCAG AA passes).

Color values

HEX	#643D73
RGB	rgb(100, 61, 115)
HSL	hsl(283, 31%, 35%)
HSV	hsv(283, 47%, 45%)
CMYK	cmyk(13%, 47%, 0%, 54.9%)
CIE-LAB	lab(32.45, 27.36, -24.36)
CIE-LCH	lch(32.45, 36.64, 318.32°)
OKLab	oklab(42.89% 0.07 -0.0674)
OKLCH	oklch(42.89% 0.097 316.1)
XYZ	xyz(10.0183, 7.2849, 17.0947)
Luminance	0.0728 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D73 #4C733D

analogous

#493D73 #643D73 #733D67

triadic

#643D73 #73643D #3D7364

tetradic

#643D73 #73493D #4C733D #3D6773

square

#643D73 #73493D #4C733D #3D6773

split-complementary

#643D73 #67733D #3D7349

monochromatic

#1E1323 #41284B #643D73 #87529B #A475B6

Accessibility & contrast

On white

8.55

#643D73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#643D73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D73

8.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D73	#FFFFFF	#000000	##FFFFFF
##643D73	1.00	8.55	2.46	8.55
#FFFFFF	8.55	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#334A75

Deuteranopia (green-blind)

#3E4E71

Tritanopia (blue-blind)

#634552

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #643d73;
/* rgb */ color: rgb(100, 61, 115);
/* oklch */ color: oklch(42.9% 0.097 316.1);

Tailwind

colors: {
  custom: {
    50: '#91739b',
    500: '#643d73',
    950: '#000000',
  },
}

SCSS

$custom: #643d73;
$custom-light: #91739b;
$custom-dark: #000000;

JSON

{
  "hex": "#643d73",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 115
  },
  "hsl": {
    "h": 283.333,
    "s": 30.682,
    "l": 34.51
  },
  "oklch": {
    "l": 0.42885,
    "c": 0.09722,
    "h": 316.1
  },
  "luminance": 0.07285
}

Semantic roles & 50–950 ramp

primary

#643D73

secondary

#7AA06C

accent

#C7617D

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643D73

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

Preview Lab → · Contrast checker → · Palette generator →