#643A82#643A82

#643A82 is a dark, vivid violet. Relative luminance 0.073; OKLCH L 43.3% C 0.121 H 309.1°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#643A82
RGB	rgb(100, 58, 130)
HSL	hsl(275, 38%, 37%)
HSV	hsv(275, 55%, 51%)
CMYK	cmyk(23.1%, 55.4%, 0%, 49%)
CIE-LAB	lab(32.58, 32.74, -33.53)
CIE-LCH	lch(32.58, 46.86, 314.32°)
OKLab	oklab(43.26% 0.0765 -0.094)
OKLCH	oklch(43.26% 0.121 309.1)
XYZ	xyz(10.7971, 7.3473, 21.9641)
Luminance	0.0735 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A82 #58823A

analogous

#403A82 #643A82 #823A7C

triadic

#643A82 #82643A #3A8264

tetradic

#643A82 #82403A #58823A #3A7C82

square

#643A82 #82403A #58823A #3A7C82

split-complementary

#643A82 #7C823A #3A8240

monochromatic

#23142D #432758 #643A82 #854DAC #A275C1

Accessibility & contrast

On white

8.50

#643A82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#643A82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A82

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A82	#FFFFFF	#000000	##FFFFFF
##643A82	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#254B84

Deuteranopia (green-blind)

#324D80

Tritanopia (blue-blind)

#604758

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #643a82;
/* rgb */ color: rgb(100, 58, 130);
/* oklch */ color: oklch(43.3% 0.121 309.1);

Tailwind

colors: {
  custom: {
    50: '#9272a7',
    500: '#643a82',
    950: '#000000',
  },
}

SCSS

$custom: #643a82;
$custom-light: #9272a7;
$custom-dark: #000000;

JSON

{
  "hex": "#643a82",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 130
  },
  "hsl": {
    "h": 275,
    "s": 38.298,
    "l": 36.863
  },
  "oklch": {
    "l": 0.43257,
    "c": 0.12124,
    "h": 309.1
  },
  "luminance": 0.07347
}

Semantic roles & 50–950 ramp

primary

#643A82

secondary

#87AB6D

accent

#CE5A8A

background

#F9F6FA

surface

#F1ECF4

border

#CBC7CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643A82

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

Preview Lab → · Contrast checker → · Palette generator →