#643A73#643A73

#643A73 is a dark, moderate purple. Relative luminance 0.070; OKLCH L 42.4% C 0.103 H 316.6°. Best body text is #FFFFFF at 8.77:1 contrast (WCAG AA passes).

Color values

HEX	#643A73
RGB	rgb(100, 58, 115)
HSL	hsl(284, 33%, 34%)
HSV	hsv(284, 50%, 45%)
CMYK	cmyk(13%, 49.6%, 0%, 54.9%)
CIE-LAB	lab(31.75, 29.15, -25.46)
CIE-LCH	lch(31.75, 38.71, 318.86°)
OKLab	oklab(42.36% 0.0748 -0.0706)
OKLCH	oklch(42.36% 0.103 316.6)
XYZ	xyz(9.8626, 6.9735, 17.0428)
Luminance	0.0697 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A73 #49733A

analogous

#483A73 #643A73 #733A66

triadic

#643A73 #73643A #3A7364

tetradic

#643A73 #73483A #49733A #3A6673

square

#643A73 #73483A #49733A #3A6673

split-complementary

#643A73 #66733A #3A7348

monochromatic

#1D1122 #41254A #643A73 #874F9C #A470B7

Accessibility & contrast

On white

8.77

#643A73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#643A73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A73

8.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A73	#FFFFFF	#000000	##FFFFFF
##643A73	1.00	8.77	2.39	8.77
#FFFFFF	8.77	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F4875

Deuteranopia (green-blind)

#3B4C71

Tritanopia (blue-blind)

#644251

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #643a73;
/* rgb */ color: rgb(100, 58, 115);
/* oklch */ color: oklch(42.4% 0.103 316.6);

Tailwind

colors: {
  custom: {
    50: '#91719b',
    500: '#643a73',
    950: '#000000',
  },
}

SCSS

$custom: #643a73;
$custom-light: #91719b;
$custom-dark: #000000;

JSON

{
  "hex": "#643a73",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 115
  },
  "hsl": {
    "h": 284.211,
    "s": 32.948,
    "l": 33.922
  },
  "oklch": {
    "l": 0.42363,
    "c": 0.10283,
    "h": 316.6
  },
  "luminance": 0.06973
}

Semantic roles & 50–950 ramp

primary

#643A73

secondary

#77A168

accent

#C95F7B

background

#F9F6F9

surface

#F1ECF2

border

#CBC7CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643A73

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

Preview Lab → · Contrast checker → · Palette generator →