#643DC4#643DC4

#643DC4 is a mid, vivid violet. Relative luminance 0.100; OKLCH L 48.6% C 0.198 H 290.3°. Best body text is #FFFFFF at 6.99:1 contrast (WCAG AA passes).

Color values

HEX	#643DC4
RGB	rgb(100, 61, 196)
HSL	hsl(257, 53%, 50%)
HSV	hsv(257, 69%, 77%)
CMYK	cmyk(49%, 68.9%, 0%, 23.1%)
CIE-LAB	lab(37.90, 48.75, -64.65)
CIE-LCH	lch(37.90, 80.98, 307.02°)
OKLab	oklab(48.6% 0.0687 -0.1854)
OKLCH	oklch(48.6% 0.198 290.3)
XYZ	xyz(16.8852, 10.0317, 53.2605)
Luminance	0.1003 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643DC4 #9DC43D

analogous

#3D59C4 #643DC4 #A73DC4

triadic

#643DC4 #C4643D #3DC464

tetradic

#643DC4 #C43D59 #9DC43D #3DC4A7

square

#643DC4 #C43D59 #9DC43D #3DC4A7

split-complementary

#643DC4 #C4A73D #59C43D

monochromatic

#341F67 #4C2E96 #643DC4 #896CD2 #AF9BE1

Accessibility & contrast

On white

6.99

#643DC4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#643DC4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #643DC4

6.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643DC4	#FFFFFF	#000000	##FFFFFF
##643DC4	1.00	6.99	3.01	6.99
#FFFFFF	6.99	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CC8

Deuteranopia (green-blind)

#0056C1

Tritanopia (blue-blind)

#445F7C

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #643dc4;
/* rgb */ color: rgb(100, 61, 196);
/* oklch */ color: oklch(48.6% 0.198 290.3);

Tailwind

colors: {
  custom: {
    50: '#9975d7',
    500: '#643dc4',
    950: '#000000',
  },
}

SCSS

$custom: #643dc4;
$custom-light: #9975d7;
$custom-dark: #000000;

JSON

{
  "hex": "#643dc4",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 196
  },
  "hsl": {
    "h": 257.333,
    "s": 53.36,
    "l": 50.392
  },
  "oklch": {
    "l": 0.48598,
    "c": 0.19775,
    "h": 290.3
  },
  "luminance": 0.10032
}

Semantic roles & 50–950 ramp

primary

#643DC4

secondary

#BBCD90

accent

#DD4BB3

background

#F9F7FD

surface

#F2EDFA

border

#CCC8D3

text

#0F0914

muted

#7E7B83

Preview Lab

Preview with #643DC4

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

Preview Lab → · Contrast checker → · Palette generator →