#643AB5#643AB5

#643AB5 is a mid, vivid violet. Relative luminance 0.091; OKLCH L 46.9% C 0.184 H 293.8°. Best body text is #FFFFFF at 7.46:1 contrast (WCAG AA passes).

Color values

HEX	#643AB5
RGB	rgb(100, 58, 181)
HSL	hsl(260, 51%, 47%)
HSV	hsv(260, 68%, 71%)
CMYK	cmyk(44.8%, 68%, 0%, 29%)
CIE-LAB	lab(36.12, 46.18, -58.74)
CIE-LCH	lch(36.12, 74.72, 308.18°)
OKLab	oklab(46.95% 0.0741 -0.168)
OKLCH	oklch(46.95% 0.184 293.8)
XYZ	xyz(15.1068, 9.0712, 44.6621)
Luminance	0.0907 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 3.25

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643AB5 #8BB53A

analogous

#3A4EB5 #643AB5 #A23AB5

triadic

#643AB5 #B5643A #3AB564

tetradic

#643AB5 #B53A4E #8BB53A #3AB5A2

square

#643AB5 #B53A4E #8BB53A #3AB5A2

split-complementary

#643AB5 #B5A23A #4EB53A

monochromatic

#311C58 #4A2B87 #643AB5 #8560CC #A98EDB

Accessibility & contrast

On white

7.46

#643AB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#643AB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643AB5

7.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643AB5	#FFFFFF	#000000	##FFFFFF
##643AB5	1.00	7.46	2.81	7.46
#FFFFFF	7.46	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B9

Deuteranopia (green-blind)

#0053B3

Tritanopia (blue-blind)

#4D5873

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #643ab5;
/* rgb */ color: rgb(100, 58, 181);
/* oklch */ color: oklch(46.9% 0.184 293.8);

Tailwind

colors: {
  custom: {
    50: '#9773cc',
    500: '#643ab5',
    950: '#000000',
  },
}

SCSS

$custom: #643ab5;
$custom-light: #9773cc;
$custom-dark: #000000;

JSON

{
  "hex": "#643ab5",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 181
  },
  "hsl": {
    "h": 260.488,
    "s": 51.464,
    "l": 46.863
  },
  "oklch": {
    "l": 0.4695,
    "c": 0.18364,
    "h": 293.8
  },
  "luminance": 0.09072
}

Semantic roles & 50–950 ramp

primary

#643AB5

secondary

#B0C685

accent

#DB4DAA

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643AB5

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

Preview Lab → · Contrast checker → · Palette generator →