#643C86#643C86

#643C86 is a dark, vivid violet. Relative luminance 0.077; OKLCH L 43.8% C 0.123 H 307.0°. Best body text is #FFFFFF at 8.29:1 contrast (WCAG AA passes).

Color values

HEX	#643C86
RGB	rgb(100, 60, 134)
HSL	hsl(272, 38%, 38%)
HSV	hsv(272, 55%, 53%)
CMYK	cmyk(25.4%, 55.2%, 0%, 47.5%)
CIE-LAB	lab(33.27, 32.57, -34.92)
CIE-LCH	lch(33.27, 47.75, 313.01°)
OKLab	oklab(43.84% 0.074 -0.0981)
OKLCH	oklch(43.84% 0.123 307)
XYZ	xyz(11.1736, 7.6624, 23.4400)
Luminance	0.0766 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C86 #5E863C

analogous

#3F3C86 #643C86 #863C83

triadic

#643C86 #86643C #3C8664

tetradic

#643C86 #863F3C #5E863C #3C8386

square

#643C86 #863F3C #5E863C #3C8386

split-complementary

#643C86 #83863C #3C863F

monochromatic

#251631 #44295C #643C86 #844FB0 #A179C3

Accessibility & contrast

On white

8.29

#643C86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.53

#643C86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C86

8.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C86	#FFFFFF	#000000	##FFFFFF
##643C86	1.00	8.29	2.53	8.29
#FFFFFF	8.29	1.00	21.00	1.00
#000000	2.53	21.00	1.00	21.00
##FFFFFF	8.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#254D88

Deuteranopia (green-blind)

#324F84

Tritanopia (blue-blind)

#5F495B

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #643c86;
/* rgb */ color: rgb(100, 60, 134);
/* oklch */ color: oklch(43.8% 0.123 307.0);

Tailwind

colors: {
  custom: {
    50: '#9273aa',
    500: '#643c86',
    950: '#000000',
  },
}

SCSS

$custom: #643c86;
$custom-light: #9273aa;
$custom-dark: #000000;

JSON

{
  "hex": "#643c86",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 134
  },
  "hsl": {
    "h": 272.432,
    "s": 38.144,
    "l": 38.039
  },
  "oklch": {
    "l": 0.43839,
    "c": 0.12284,
    "h": 307
  },
  "luminance": 0.07662
}

Semantic roles & 50–950 ramp

primary

#643C86

secondary

#8CAD71

accent

#CE5A8F

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D0810

muted

#7E7B7F

Preview Lab

Preview with #643C86

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

Preview Lab → · Contrast checker → · Palette generator →