#643AB0#643AB0

#643AB0 is a mid, vivid violet. Relative luminance 0.089; OKLCH L 46.6% C 0.178 H 294.9°. Best body text is #FFFFFF at 7.57:1 contrast (WCAG AA passes).

Color values

HEX	#643AB0
RGB	rgb(100, 58, 176)
HSL	hsl(261, 50%, 46%)
HSV	hsv(261, 67%, 69%)
CMYK	cmyk(43.2%, 67%, 0%, 31%)
CIE-LAB	lab(35.73, 44.81, -56.40)
CIE-LCH	lch(35.73, 72.04, 308.47°)
OKLab	oklab(46.55% 0.0748 -0.1612)
OKLCH	oklch(46.55% 0.178 294.9)
XYZ	xyz(14.6030, 8.8697, 42.0085)
Luminance	0.0887 (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

#643AB0 #86B03A

analogous

#3A4BB0 #643AB0 #9F3AB0

triadic

#643AB0 #B0643A #3AB064

tetradic

#643AB0 #B03A4B #86B03A #3AB09F

square

#643AB0 #B03A4B #86B03A #3AB09F

split-complementary

#643AB0 #B09F3A #4BB03A

monochromatic

#301C54 #4A2B82 #643AB0 #845DCA #A78BD9

Accessibility & contrast

On white

7.57

#643AB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#643AB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643AB0

7.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643AB0	#FFFFFF	#000000	##FFFFFF
##643AB0	1.00	7.57	2.77	7.57
#FFFFFF	7.57	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B4

Deuteranopia (green-blind)

#0052AE

Tritanopia (blue-blind)

#4F5670

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #643ab0;
/* rgb */ color: rgb(100, 58, 176);
/* oklch */ color: oklch(46.6% 0.178 294.9);

Tailwind

colors: {
  custom: {
    50: '#9673c8',
    500: '#643ab0',
    950: '#000000',
  },
}

SCSS

$custom: #643ab0;
$custom-light: #9673c8;
$custom-dark: #000000;

JSON

{
  "hex": "#643ab0",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 176
  },
  "hsl": {
    "h": 261.356,
    "s": 50.427,
    "l": 45.882
  },
  "oklch": {
    "l": 0.4655,
    "c": 0.17768,
    "h": 294.9
  },
  "luminance": 0.0887
}

Semantic roles & 50–950 ramp

primary

#643AB0

secondary

#ACC382

accent

#DA4EA8

background

#F9F7FC

surface

#F2EDF8

border

#CCC8D1

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643AB0

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

Preview Lab → · Contrast checker → · Palette generator →