#643CC8#643CC8

#643CC8 is a mid, highly saturated violet. Relative luminance 0.101; OKLCH L 48.8% C 0.204 H 289.8°. Best body text is #FFFFFF at 6.95:1 contrast (WCAG AA passes).

Color values

HEX	#643CC8
RGB	rgb(100, 60, 200)
HSL	hsl(257, 56%, 51%)
HSV	hsv(257, 70%, 78%)
CMYK	cmyk(50%, 70%, 0%, 21.6%)
CIE-LAB	lab(38.04, 50.40, -66.76)
CIE-LCH	lch(38.04, 83.64, 307.05°)
OKLab	oklab(48.8% 0.0689 -0.1916)
OKLCH	oklch(48.8% 0.204 289.8)
XYZ	xyz(17.2937, 10.1104, 55.6727)
Luminance	0.1011 (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

#643CC8 #A0C83C

analogous

#3C5AC8 #643CC8 #AA3CC8

triadic

#643CC8 #C8643C #3CC864

tetradic

#643CC8 #C83C5A #A0C83C #3CC8AA

square

#643CC8 #C83C5A #A0C83C #3CC8AA

split-complementary

#643CC8 #C8AA3C #5AC83C

monochromatic

#341E6B #4C2C9B #643CC8 #8A6CD5 #B09BE3

Accessibility & contrast

On white

6.95

#643CC8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#643CC8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #643CC8

6.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643CC8	#FFFFFF	#000000	##FFFFFF
##643CC8	1.00	6.95	3.02	6.95
#FFFFFF	6.95	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CCC

Deuteranopia (green-blind)

#0056C5

Tritanopia (blue-blind)

#41607E

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #643cc8;
/* rgb */ color: rgb(100, 60, 200);
/* oklch */ color: oklch(48.8% 0.204 289.8);

Tailwind

colors: {
  custom: {
    50: '#9975da',
    500: '#643cc8',
    950: '#000000',
  },
}

SCSS

$custom: #643cc8;
$custom-light: #9975da;
$custom-dark: #000000;

JSON

{
  "hex": "#643cc8",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 200
  },
  "hsl": {
    "h": 257.143,
    "s": 56,
    "l": 50.98
  },
  "oklch": {
    "l": 0.488,
    "c": 0.20361,
    "h": 289.8
  },
  "luminance": 0.10111
}

Semantic roles & 50–950 ramp

primary

#643CC8

secondary

#BDCF91

accent

#DF49B4

background

#FAF7FD

surface

#F3EDFB

border

#CDC8D4

text

#0F0815

muted

#7F7B83

Preview Lab

Preview with #643CC8

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

Preview Lab → · Contrast checker → · Palette generator →