#643D86#643D86

#643D86 is a dark, vivid violet. Relative luminance 0.078; OKLCH L 44.0% C 0.121 H 306.8°. Best body text is #FFFFFF at 8.22:1 contrast (WCAG AA passes).

Color values

HEX	#643D86
RGB	rgb(100, 61, 134)
HSL	hsl(272, 37%, 38%)
HSV	hsv(272, 54%, 53%)
CMYK	cmyk(25.4%, 54.5%, 0%, 47.5%)
CIE-LAB	lab(33.50, 31.98, -34.56)
CIE-LCH	lch(33.50, 47.09, 312.78°)
OKLab	oklab(44.01% 0.0725 -0.097)
OKLCH	oklch(44.01% 0.121 306.8)
XYZ	xyz(11.2265, 7.7682, 23.4576)
Luminance	0.0777 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D86 #5F863D

analogous

#3F3D86 #643D86 #863D83

triadic

#643D86 #86643D #3D8664

tetradic

#643D86 #863F3D #5F863D #3D8386

square

#643D86 #863F3D #5F863D #3D8386

split-complementary

#643D86 #83863D #3D863F

monochromatic

#251732 #452A5C #643D86 #8351B0 #A17BC3

Accessibility & contrast

On white

8.22

#643D86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#643D86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D86

8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D86	#FFFFFF	#000000	##FFFFFF
##643D86	1.00	8.22	2.55	8.22
#FFFFFF	8.22	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#264D88

Deuteranopia (green-blind)

#334F84

Tritanopia (blue-blind)

#5F4A5B

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #643d86;
/* rgb */ color: rgb(100, 61, 134);
/* oklch */ color: oklch(44.0% 0.121 306.8);

Tailwind

colors: {
  custom: {
    50: '#9274a9',
    500: '#643d86',
    950: '#000000',
  },
}

SCSS

$custom: #643d86;
$custom-light: #9274a9;
$custom-dark: #000000;

JSON

{
  "hex": "#643d86",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 134
  },
  "hsl": {
    "h": 272.055,
    "s": 37.436,
    "l": 38.235
  },
  "oklch": {
    "l": 0.44006,
    "c": 0.12115,
    "h": 306.8
  },
  "luminance": 0.07768
}

Semantic roles & 50–950 ramp

primary

#643D86

secondary

#8DAD72

accent

#CD5A90

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D0810

muted

#7E7B7F

Preview Lab

Preview with #643D86

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

Preview Lab → · Contrast checker → · Palette generator →