#643B84#643B84

#643B84 is a dark, vivid violet. Relative luminance 0.075; OKLCH L 43.5% C 0.122 H 308.1°. Best body text is #FFFFFF at 8.40:1 contrast (WCAG AA passes).

Color values

HEX	#643B84
RGB	rgb(100, 59, 132)
HSL	hsl(274, 38%, 37%)
HSV	hsv(274, 55%, 52%)
CMYK	cmyk(24.2%, 55.3%, 0%, 48.2%)
CIE-LAB	lab(32.93, 32.65, -34.23)
CIE-LCH	lch(32.93, 47.30, 313.65°)
OKLab	oklab(43.55% 0.0752 -0.0961)
OKLCH	oklch(43.55% 0.122 308.1)
XYZ	xyz(10.9835, 7.5033, 22.6950)
Luminance	0.0750 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643B84 #5B843B

analogous

#403B84 #643B84 #843B7F

triadic

#643B84 #84643B #3B8464

tetradic

#643B84 #84403B #5B843B #3B7F84

square

#643B84 #84403B #5B843B #3B7F84

split-complementary

#643B84 #7F843B #3B8440

monochromatic

#24152F #44285A #643B84 #844EAE #A177C2

Accessibility & contrast

On white

8.40

#643B84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#643B84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643B84

8.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643B84	#FFFFFF	#000000	##FFFFFF
##643B84	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)

#254C86

Deuteranopia (green-blind)

#324E82

Tritanopia (blue-blind)

#5F4859

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #643b84;
/* rgb */ color: rgb(100, 59, 132);
/* oklch */ color: oklch(43.5% 0.122 308.1);

Tailwind

colors: {
  custom: {
    50: '#9272a8',
    500: '#643b84',
    950: '#000000',
  },
}

SCSS

$custom: #643b84;
$custom-light: #9272a8;
$custom-dark: #000000;

JSON

{
  "hex": "#643b84",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 132
  },
  "hsl": {
    "h": 273.699,
    "s": 38.22,
    "l": 37.451
  },
  "oklch": {
    "l": 0.43547,
    "c": 0.12203,
    "h": 308.1
  },
  "luminance": 0.07503
}

Semantic roles & 50–950 ramp

primary

#643B84

secondary

#8AAC6F

accent

#CE5A8D

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643B84

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

Preview Lab → · Contrast checker → · Palette generator →