#643FA4#643FA4

#643FA4 is a mid, vivid violet. Relative luminance 0.089; OKLCH L 46.4% C 0.156 H 296.7°. Best body text is #FFFFFF at 7.53:1 contrast (WCAG AA passes).

Color values

HEX	#643FA4
RGB	rgb(100, 63, 164)
HSL	hsl(262, 44%, 45%)
HSV	hsv(262, 62%, 64%)
CMYK	cmyk(39%, 61.6%, 0%, 35.7%)
CIE-LAB	lab(35.88, 38.76, -49.00)
CIE-LCH	lch(35.88, 62.48, 308.34°)
OKLab	oklab(46.38% 0.0702 -0.1394)
OKLCH	oklch(46.38% 0.156 296.7)
XYZ	xyz(13.7322, 8.9444, 36.1177)
Luminance	0.0895 (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

#643FA4 #7FA43F

analogous

#3F4DA4 #643FA4 #973FA4

triadic

#643FA4 #A4643F #3FA464

tetradic

#643FA4 #A43F4D #7FA43F #3FA497

square

#643FA4 #A43F4D #7FA43F #3FA497

split-complementary

#643FA4 #A4973F #4DA43F

monochromatic

#2E1D4C #492E78 #643FA4 #835FC1 #A58BD2

Accessibility & contrast

On white

7.53

#643FA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.79

#643FA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643FA4

7.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643FA4	#FFFFFF	#000000	##FFFFFF
##643FA4	1.00	7.53	2.79	7.53
#FFFFFF	7.53	1.00	21.00	1.00
#000000	2.79	21.00	1.00	21.00
##FFFFFF	7.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055A7

Deuteranopia (green-blind)

#0F53A2

Tritanopia (blue-blind)

#55556B

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #643fa4;
/* rgb */ color: rgb(100, 63, 164);
/* oklch */ color: oklch(46.4% 0.156 296.7);

Tailwind

colors: {
  custom: {
    50: '#9576c0',
    500: '#643fa4',
    950: '#000000',
  },
}

SCSS

$custom: #643fa4;
$custom-light: #9576c0;
$custom-dark: #000000;

JSON

{
  "hex": "#643fa4",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 164
  },
  "hsl": {
    "h": 261.98,
    "s": 44.493,
    "l": 44.51
  },
  "oklch": {
    "l": 0.46376,
    "c": 0.1561,
    "h": 296.7
  },
  "luminance": 0.08945
}

Semantic roles & 50–950 ramp

primary

#643FA4

secondary

#A7BD82

accent

#D454A5

background

#F9F7FB

surface

#F2EDF7

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643FA4

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

Preview Lab → · Contrast checker → · Palette generator →