#643DA4#643DA4

#643DA4 is a mid, vivid violet. Relative luminance 0.087; OKLCH L 46.1% C 0.159 H 297.2°. Best body text is #FFFFFF at 7.65:1 contrast (WCAG AA passes).

Color values

HEX	#643DA4
RGB	rgb(100, 61, 164)
HSL	hsl(263, 46%, 44%)
HSV	hsv(263, 63%, 64%)
CMYK	cmyk(39%, 62.8%, 0%, 35.7%)
CIE-LAB	lab(35.45, 39.89, -49.69)
CIE-LCH	lch(35.45, 63.72, 308.76°)
OKLab	oklab(46.07% 0.0726 -0.1414)
OKLCH	oklch(46.07% 0.159 297.2)
XYZ	xyz(13.6234, 8.7269, 36.0815)
Luminance	0.0873 (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

#643DA4 #7DA43D

analogous

#3D4AA4 #643DA4 #983DA4

triadic

#643DA4 #A4643D #3DA464

tetradic

#643DA4 #A43D4A #7DA43D #3DA498

square

#643DA4 #A43D4A #7DA43D #3DA498

split-complementary

#643DA4 #A4983D #4AA43D

monochromatic

#2E1C4B #492C77 #643DA4 #835CC2 #A588D3

Accessibility & contrast

On white

7.65

#643DA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#643DA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643DA4

7.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643DA4	#FFFFFF	#000000	##FFFFFF
##643DA4	1.00	7.65	2.75	7.65
#FFFFFF	7.65	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054A7

Deuteranopia (green-blind)

#0852A2

Tritanopia (blue-blind)

#55546B

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #643da4;
/* rgb */ color: rgb(100, 61, 164);
/* oklch */ color: oklch(46.1% 0.159 297.2);

Tailwind

colors: {
  custom: {
    50: '#9574c0',
    500: '#643da4',
    950: '#000000',
  },
}

SCSS

$custom: #643da4;
$custom-light: #9574c0;
$custom-dark: #000000;

JSON

{
  "hex": "#643da4",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 164
  },
  "hsl": {
    "h": 262.718,
    "s": 45.778,
    "l": 44.118
  },
  "oklch": {
    "l": 0.46068,
    "c": 0.15898,
    "h": 297.2
  },
  "luminance": 0.08727
}

Semantic roles & 50–950 ramp

primary

#643DA4

secondary

#A6BD7F

accent

#D552A4

background

#F9F7FB

surface

#F2EDF7

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643DA4

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

Preview Lab → · Contrast checker → · Palette generator →