#643C84#643C84

#643C84 is a dark, vivid violet. Relative luminance 0.076; OKLCH L 43.7% C 0.120 H 307.8°. Best body text is #FFFFFF at 8.33:1 contrast (WCAG AA passes).

Color values

HEX	#643C84
RGB	rgb(100, 60, 132)
HSL	hsl(273, 38%, 38%)
HSV	hsv(273, 55%, 52%)
CMYK	cmyk(24.2%, 54.5%, 0%, 48.2%)
CIE-LAB	lab(33.15, 32.07, -33.87)
CIE-LCH	lch(33.15, 46.64, 313.43°)
OKLab	oklab(43.71% 0.0738 -0.095)
OKLCH	oklch(43.71% 0.12 307.8)
XYZ	xyz(11.0354, 7.6071, 22.7123)
Luminance	0.0761 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643C84 #5C843C

analogous

#403C84 #643C84 #843C80

triadic

#643C84 #84643C #3C8464

tetradic

#643C84 #84403C #5C843C #3C8084

square

#643C84 #84403C #5C843C #3C8084

split-complementary

#643C84 #80843C #3C8440

monochromatic

#241630 #44295A #643C84 #844FAE #A179C2

Accessibility & contrast

On white

8.33

#643C84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.52

#643C84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643C84

8.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643C84	#FFFFFF	#000000	##FFFFFF
##643C84	1.00	8.33	2.52	8.33
#FFFFFF	8.33	1.00	21.00	1.00
#000000	2.52	21.00	1.00	21.00
##FFFFFF	8.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#264C86

Deuteranopia (green-blind)

#334E82

Tritanopia (blue-blind)

#5F495A

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #643c84;
/* rgb */ color: rgb(100, 60, 132);
/* oklch */ color: oklch(43.7% 0.120 307.8);

Tailwind

colors: {
  custom: {
    50: '#9273a8',
    500: '#643c84',
    950: '#000000',
  },
}

SCSS

$custom: #643c84;
$custom-light: #9273a8;
$custom-dark: #000000;

JSON

{
  "hex": "#643c84",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 132
  },
  "hsl": {
    "h": 273.333,
    "s": 37.5,
    "l": 37.647
  },
  "oklch": {
    "l": 0.43713,
    "c": 0.12032,
    "h": 307.8
  },
  "luminance": 0.07607
}

Semantic roles & 50–950 ramp

primary

#643C84

secondary

#8BAC70

accent

#CD5A8E

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #643C84

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

Preview Lab → · Contrast checker → · Palette generator →