#643AB1#643AB1

#643AB1 is a mid, vivid violet. Relative luminance 0.089; OKLCH L 46.6% C 0.179 H 294.7°. Best body text is #FFFFFF at 7.55:1 contrast (WCAG AA passes).

Color values

HEX	#643AB1
RGB	rgb(100, 58, 177)
HSL	hsl(261, 51%, 46%)
HSV	hsv(261, 67%, 69%)
CMYK	cmyk(43.5%, 67.2%, 0%, 30.6%)
CIE-LAB	lab(35.81, 45.09, -56.87)
CIE-LCH	lch(35.81, 72.58, 308.41°)
OKLab	oklab(46.63% 0.0746 -0.1625)
OKLCH	oklch(46.63% 0.179 294.7)
XYZ	xyz(14.7023, 8.9094, 42.5315)
Luminance	0.0891 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 3.78

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643AB1 #87B13A

analogous

#3A4CB1 #643AB1 #9F3AB1

triadic

#643AB1 #B1643A #3AB164

tetradic

#643AB1 #B13A4C #87B13A #3AB19F

square

#643AB1 #B13A4C #87B13A #3AB19F

split-complementary

#643AB1 #B19F3A #4CB13A

monochromatic

#301C55 #4A2B83 #643AB1 #845ECA #A78CD9

Accessibility & contrast

On white

7.55

#643AB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#643AB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643AB1

7.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643AB1	#FFFFFF	#000000	##FFFFFF
##643AB1	1.00	7.55	2.78	7.55
#FFFFFF	7.55	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B5

Deuteranopia (green-blind)

#0052AF

Tritanopia (blue-blind)

#4F5770

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #643ab1;
/* rgb */ color: rgb(100, 58, 177);
/* oklch */ color: oklch(46.6% 0.179 294.7);

Tailwind

colors: {
  custom: {
    50: '#9673c9',
    500: '#643ab1',
    950: '#000000',
  },
}

SCSS

$custom: #643ab1;
$custom-light: #9673c9;
$custom-dark: #000000;

JSON

{
  "hex": "#643ab1",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 177
  },
  "hsl": {
    "h": 261.176,
    "s": 50.638,
    "l": 46.078
  },
  "oklch": {
    "l": 0.46629,
    "c": 0.17887,
    "h": 294.7
  },
  "luminance": 0.0891
}

Semantic roles & 50–950 ramp

primary

#643AB1

secondary

#ADC483

accent

#DA4EA9

background

#F9F7FC

surface

#F2EDF8

border

#CCC8D1

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643AB1

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

Preview Lab → · Contrast checker → · Palette generator →