#643A84#643A84

#643A84 is a dark, vivid violet. Relative luminance 0.074; OKLCH L 43.4% C 0.124 H 308.3°. Best body text is #FFFFFF at 8.47:1 contrast (WCAG AA passes).

Color values

HEX	#643A84
RGB	rgb(100, 58, 132)
HSL	hsl(274, 39%, 37%)
HSV	hsv(274, 56%, 52%)
CMYK	cmyk(24.2%, 56.1%, 0%, 48.2%)
CIE-LAB	lab(32.70, 33.23, -34.58)
CIE-LCH	lch(32.70, 47.96, 313.86°)
OKLab	oklab(43.38% 0.0767 -0.0971)
OKLCH	oklch(43.38% 0.124 308.3)
XYZ	xyz(10.9326, 7.4015, 22.6780)
Luminance	0.0740 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A84 #5A843A

analogous

#3F3A84 #643A84 #843A7F

triadic

#643A84 #84643A #3A8464

tetradic

#643A84 #843F3A #5A843A #3A7F84

square

#643A84 #843F3A #5A843A #3A7F84

split-complementary

#643A84 #7F843A #3A843F

monochromatic

#24152F #442759 #643A84 #844DAF #A176C3

Accessibility & contrast

On white

8.47

#643A84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#643A84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A84

8.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A84	#FFFFFF	#000000	##FFFFFF
##643A84	1.00	8.47	2.48	8.47
#FFFFFF	8.47	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234B86

Deuteranopia (green-blind)

#314D82

Tritanopia (blue-blind)

#5F4759

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #643a84;
/* rgb */ color: rgb(100, 58, 132);
/* oklch */ color: oklch(43.4% 0.124 308.3);

Tailwind

colors: {
  custom: {
    50: '#9272a8',
    500: '#643a84',
    950: '#000000',
  },
}

SCSS

$custom: #643a84;
$custom-light: #9272a8;
$custom-dark: #000000;

JSON

{
  "hex": "#643a84",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 132
  },
  "hsl": {
    "h": 274.054,
    "s": 38.947,
    "l": 37.255
  },
  "oklch": {
    "l": 0.43383,
    "c": 0.12373,
    "h": 308.3
  },
  "luminance": 0.07401
}

Semantic roles & 50–950 ramp

primary

#643A84

secondary

#89AC6E

accent

#CF598C

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D0810

muted

#7E7B7F

Preview Lab

Preview with #643A84

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

Preview Lab → · Contrast checker → · Palette generator →