#643E72#643E72

#643E72 is a dark, moderate purple. Relative luminance 0.074; OKLCH L 43.0% C 0.094 H 316.5°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#643E72
RGB	rgb(100, 62, 114)
HSL	hsl(284, 30%, 35%)
HSV	hsv(284, 46%, 45%)
CMYK	cmyk(12.3%, 45.6%, 0%, 55.3%)
CIE-LAB	lab(32.63, 26.53, -23.44)
CIE-LCH	lch(32.63, 35.40, 318.54°)
OKLab	oklab(43.01% 0.0682 -0.0648)
OKLCH	oklch(43.01% 0.094 316.5)
XYZ	xyz(10.0150, 7.3698, 16.8113)
Luminance	0.0737 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E72 #4C723E

analogous

#4A3E72 #643E72 #723E66

triadic

#643E72 #72643E #3E7264

tetradic

#643E72 #724A3E #4C723E #3E6672

square

#643E72 #724A3E #4C723E #3E6672

split-complementary

#643E72 #66723E #3E724A

monochromatic

#1E1323 #41284A #643E72 #87549A #A476B4

Accessibility & contrast

On white

8.49

#643E72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#643E72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E72

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E72	#FFFFFF	#000000	##FFFFFF
##643E72	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#354A74

Deuteranopia (green-blind)

#3F4E71

Tritanopia (blue-blind)

#644552

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #643e72;
/* rgb */ color: rgb(100, 62, 114);
/* oklch */ color: oklch(43.0% 0.094 316.5);

Tailwind

colors: {
  custom: {
    50: '#91749b',
    500: '#643e72',
    950: '#000000',
  },
}

SCSS

$custom: #643e72;
$custom-light: #91749b;
$custom-dark: #000000;

JSON

{
  "hex": "#643e72",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 114
  },
  "hsl": {
    "h": 283.846,
    "s": 29.545,
    "l": 34.51
  },
  "oklch": {
    "l": 0.43009,
    "c": 0.09409,
    "h": 316.5
  },
  "luminance": 0.07369
}

Semantic roles & 50–950 ramp

primary

#643E72

secondary

#7A9F6D

accent

#C6627D

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643E72

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

Preview Lab → · Contrast checker → · Palette generator →