#643E75#643E75

#643E75 is a dark, moderate purple. Relative luminance 0.074; OKLCH L 43.2% C 0.098 H 314.7°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#643E75
RGB	rgb(100, 62, 117)
HSL	hsl(281, 31%, 35%)
HSV	hsv(281, 47%, 46%)
CMYK	cmyk(14.5%, 47%, 0%, 54.1%)
CIE-LAB	lab(32.79, 27.23, -25.09)
CIE-LCH	lch(32.79, 37.03, 317.34°)
OKLab	oklab(43.17% 0.0688 -0.0695)
OKLCH	oklch(43.17% 0.098 314.7)
XYZ	xyz(10.1885, 7.4392, 17.7254)
Luminance	0.0744 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643E75 #4F753E

analogous

#493E75 #643E75 #753E6A

triadic

#643E75 #75643E #3E7564

tetradic

#643E75 #75493E #4F753E #3E6A75

square

#643E75 #75493E #4F753E #3E6A75

split-complementary

#643E75 #6A753E #3E7549

monochromatic

#201425 #42294D #643E75 #86539D #A377B7

Accessibility & contrast

On white

8.44

#643E75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#643E75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643E75

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643E75	#FFFFFF	#000000	##FFFFFF
##643E75	1.00	8.44	2.49	8.44
#FFFFFF	8.44	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#334B77

Deuteranopia (green-blind)

#3E4E73

Tritanopia (blue-blind)

#634654

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #643e75;
/* rgb */ color: rgb(100, 62, 117);
/* oklch */ color: oklch(43.2% 0.098 314.7);

Tailwind

colors: {
  custom: {
    50: '#91749d',
    500: '#643e75',
    950: '#000000',
  },
}

SCSS

$custom: #643e75;
$custom-light: #91749d;
$custom-dark: #000000;

JSON

{
  "hex": "#643e75",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 117
  },
  "hsl": {
    "h": 281.455,
    "s": 30.726,
    "l": 35.098
  },
  "oklch": {
    "l": 0.43172,
    "c": 0.09782,
    "h": 314.7
  },
  "luminance": 0.07439
}

Semantic roles & 50–950 ramp

primary

#643E75

secondary

#7EA16E

accent

#C76180

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643E75

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

Preview Lab → · Contrast checker → · Palette generator →