#643F73#643F73

#643F73 is a dark, moderate purple. Relative luminance 0.075; OKLCH L 43.2% C 0.093 H 315.7°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#643F73
RGB	rgb(100, 63, 115)
HSL	hsl(283, 29%, 35%)
HSV	hsv(283, 45%, 45%)
CMYK	cmyk(13%, 45.2%, 0%, 54.9%)
CIE-LAB	lab(32.92, 26.16, -23.62)
CIE-LCH	lch(32.92, 35.24, 317.92°)
OKLab	oklab(43.24% 0.0668 -0.0653)
OKLCH	oklch(43.24% 0.093 315.7)
XYZ	xyz(10.1271, 7.5024, 17.1310)
Luminance	0.0750 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F73 #4E733F

analogous

#4A3F73 #643F73 #733F68

triadic

#643F73 #73643F #3F7364

tetradic

#643F73 #734A3F #4E733F #3F6873

square

#643F73 #734A3F #4E733F #3F6873

split-complementary

#643F73 #68733F #3F734A

monochromatic

#1F1424 #42294B #643F73 #86559B #A378B5

Accessibility & contrast

On white

8.40

#643F73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#643F73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F73

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F73	#FFFFFF	#000000	##FFFFFF
##643F73	1.00	8.40	2.50	8.40
#FFFFFF	8.40	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#364B75

Deuteranopia (green-blind)

#404F72

Tritanopia (blue-blind)

#634653

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #643f73;
/* rgb */ color: rgb(100, 63, 115);
/* oklch */ color: oklch(43.2% 0.093 315.7);

Tailwind

colors: {
  custom: {
    50: '#91759b',
    500: '#643f73',
    950: '#000000',
  },
}

SCSS

$custom: #643f73;
$custom-light: #91759b;
$custom-dark: #000000;

JSON

{
  "hex": "#643f73",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 115
  },
  "hsl": {
    "h": 282.692,
    "s": 29.213,
    "l": 34.902
  },
  "oklch": {
    "l": 0.43242,
    "c": 0.09343,
    "h": 315.7
  },
  "luminance": 0.07502
}

Semantic roles & 50–950 ramp

primary

#643F73

secondary

#7D9F6E

accent

#C5627F

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #643F73

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

Preview Lab → · Contrast checker → · Palette generator →