#643FA6#643FA6

#643FA6 is a mid, vivid violet. Relative luminance 0.090; OKLCH L 46.5% C 0.159 H 296.2°. Best body text is #FFFFFF at 7.49:1 contrast (WCAG AA passes).

Color values

HEX	#643FA6
RGB	rgb(100, 63, 166)
HSL	hsl(262, 45%, 45%)
HSV	hsv(262, 62%, 65%)
CMYK	cmyk(39.8%, 62%, 0%, 34.9%)
CIE-LAB	lab(36.02, 39.30, -49.98)
CIE-LCH	lch(36.02, 63.58, 308.18°)
OKLab	oklab(46.52% 0.0701 -0.1423)
OKLCH	oklch(46.52% 0.159 296.2)
XYZ	xyz(13.9142, 9.0173, 37.0764)
Luminance	0.0902 (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

#643FA6 #81A63F

analogous

#3F4EA6 #643FA6 #973FA6

triadic

#643FA6 #A6643F #3FA664

tetradic

#643FA6 #A63F4E #81A63F #3FA697

square

#643FA6 #A63F4E #81A63F #3FA697

split-complementary

#643FA6 #A6973F #4EA63F

monochromatic

#2F1D4D #492E7A #643FA6 #8360C3 #A68CD3

Accessibility & contrast

On white

7.49

#643FA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#643FA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643FA6

7.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643FA6	#FFFFFF	#000000	##FFFFFF
##643FA6	1.00	7.49	2.80	7.49
#FFFFFF	7.49	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055A9

Deuteranopia (green-blind)

#0953A4

Tritanopia (blue-blind)

#54566C

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #643fa6;
/* rgb */ color: rgb(100, 63, 166);
/* oklch */ color: oklch(46.5% 0.159 296.2);

Tailwind

colors: {
  custom: {
    50: '#9576c1',
    500: '#643fa6',
    950: '#000000',
  },
}

SCSS

$custom: #643fa6;
$custom-light: #9576c1;
$custom-dark: #000000;

JSON

{
  "hex": "#643fa6",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 166
  },
  "hsl": {
    "h": 261.553,
    "s": 44.978,
    "l": 44.902
  },
  "oklch": {
    "l": 0.46523,
    "c": 0.15861,
    "h": 296.2
  },
  "luminance": 0.09018
}

Semantic roles & 50–950 ramp

primary

#643FA6

secondary

#A9BE83

accent

#D553A6

background

#F9F7FC

surface

#F2EDF8

border

#CCC8D1

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643FA6

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

Preview Lab → · Contrast checker → · Palette generator →