#643E73#643E73

#643E73 is a dark, moderate purple. Relative luminance 0.074; OKLCH L 43.1% C 0.095 H 315.9°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#643E73
RGB	rgb(100, 62, 115)
HSL	hsl(283, 30%, 35%)
HSV	hsv(283, 46%, 45%)
CMYK	cmyk(13%, 46.1%, 0%, 54.9%)
CIE-LAB	lab(32.68, 26.76, -23.99)
CIE-LCH	lch(32.68, 35.94, 318.12°)
OKLab	oklab(43.06% 0.0684 -0.0664)
OKLCH	oklch(43.06% 0.095 315.9)
XYZ	xyz(10.0722, 7.3926, 17.1127)
Luminance	0.0739 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E73 #4D733E

analogous

#4A3E73 #643E73 #733E68

triadic

#643E73 #73643E #3E7364

tetradic

#643E73 #734A3E #4D733E #3E6873

square

#643E73 #734A3E #4D733E #3E6873

split-complementary

#643E73 #68733E #3E734A

monochromatic

#1F1323 #41294B #643E73 #87539B #A376B5

Accessibility & contrast

On white

8.47

#643E73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#643E73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E73

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E73	#FFFFFF	#000000	##FFFFFF
##643E73	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#354B75

Deuteranopia (green-blind)

#3F4E71

Tritanopia (blue-blind)

#634553

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #643e73;
/* rgb */ color: rgb(100, 62, 115);
/* oklch */ color: oklch(43.1% 0.095 315.9);

Tailwind

colors: {
  custom: {
    50: '#91749b',
    500: '#643e73',
    950: '#000000',
  },
}

SCSS

$custom: #643e73;
$custom-light: #91749b;
$custom-dark: #000000;

JSON

{
  "hex": "#643e73",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 115
  },
  "hsl": {
    "h": 283.019,
    "s": 29.944,
    "l": 34.706
  },
  "oklch": {
    "l": 0.43063,
    "c": 0.09533,
    "h": 315.9
  },
  "luminance": 0.07392
}

Semantic roles & 50–950 ramp

primary

#643E73

secondary

#7BA06D

accent

#C6627E

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643E73

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

Preview Lab → · Contrast checker → · Palette generator →