#643A75#643A75

#643A75 is a dark, moderate purple. Relative luminance 0.070; OKLCH L 42.5% C 0.105 H 315.5°. Best body text is #FFFFFF at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#643A75
RGB	rgb(100, 58, 117)
HSL	hsl(283, 34%, 34%)
HSV	hsv(283, 50%, 46%)
CMYK	cmyk(14.5%, 50.4%, 0%, 54.1%)
CIE-LAB	lab(31.85, 29.62, -26.56)
CIE-LCH	lch(31.85, 39.78, 318.12°)
OKLab	oklab(42.48% 0.0751 -0.0737)
OKLCH	oklch(42.48% 0.105 315.5)
XYZ	xyz(9.9790, 7.0201, 17.6555)
Luminance	0.0702 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A75 #4B753A

analogous

#473A75 #643A75 #753A69

triadic

#643A75 #75643A #3A7564

tetradic

#643A75 #75473A #4B753A #3A6975

square

#643A75 #75473A #4B753A #3A6975

split-complementary

#643A75 #69753A #3A7547

monochromatic

#1E1123 #41264C #643A75 #874E9E #A471B9

Accessibility & contrast

On white

8.74

#643A75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#643A75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A75

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A75	#FFFFFF	#000000	##FFFFFF
##643A75	1.00	8.74	2.40	8.74
#FFFFFF	8.74	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E4877

Deuteranopia (green-blind)

#3A4C73

Tritanopia (blue-blind)

#634352

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #643a75;
/* rgb */ color: rgb(100, 58, 117);
/* oklch */ color: oklch(42.5% 0.105 315.5);

Tailwind

colors: {
  custom: {
    50: '#91719d',
    500: '#643a75',
    950: '#000000',
  },
}

SCSS

$custom: #643a75;
$custom-light: #91719d;
$custom-dark: #000000;

JSON

{
  "hex": "#643a75",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 117
  },
  "hsl": {
    "h": 282.712,
    "s": 33.714,
    "l": 34.314
  },
  "oklch": {
    "l": 0.42476,
    "c": 0.10524,
    "h": 315.5
  },
  "luminance": 0.0702
}

Semantic roles & 50–950 ramp

primary

#643A75

secondary

#79A269

accent

#CA5E7D

background

#F9F6F9

surface

#F1ECF2

border

#CBC7CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643A75

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

Preview Lab → · Contrast checker → · Palette generator →