#643CB1#643CB1

#643CB1 is a mid, vivid violet. Relative luminance 0.091; OKLCH L 46.9% C 0.176 H 294.3°. Best body text is #FFFFFF at 7.44:1 contrast (WCAG AA passes).

Color values

HEX	#643CB1
RGB	rgb(100, 60, 177)
HSL	hsl(261, 49%, 46%)
HSV	hsv(261, 66%, 69%)
CMYK	cmyk(43.5%, 66.1%, 0%, 30.6%)
CIE-LAB	lab(36.20, 44.01, -56.23)
CIE-LCH	lch(36.20, 71.40, 308.05°)
OKLab	oklab(46.91% 0.0725 -0.1607)
OKLCH	oklch(46.91% 0.176 294.3)
XYZ	xyz(14.8051, 9.1150, 42.5658)
Luminance	0.0911 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 3.58

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643CB1 #89B13C

analogous

#3C4FB1 #643CB1 #9F3CB1

triadic

#643CB1 #B1643C #3CB164

tetradic

#643CB1 #B13C4F #89B13C #3CB19F

square

#643CB1 #B13C4F #89B13C #3CB19F

split-complementary

#643CB1 #B19F3C #4FB13C

monochromatic

#301D56 #4A2D83 #643CB1 #8561C9 #A88FD9

Accessibility & contrast

On white

7.44

#643CB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#643CB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643CB1

7.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643CB1	#FFFFFF	#000000	##FFFFFF
##643CB1	1.00	7.44	2.82	7.44
#FFFFFF	7.44	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B5

Deuteranopia (green-blind)

#0053AF

Tritanopia (blue-blind)

#4F5871

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #643cb1;
/* rgb */ color: rgb(100, 60, 177);
/* oklch */ color: oklch(46.9% 0.176 294.3);

Tailwind

colors: {
  custom: {
    50: '#9674c9',
    500: '#643cb1',
    950: '#000000',
  },
}

SCSS

$custom: #643cb1;
$custom-light: #9674c9;
$custom-dark: #000000;

JSON

{
  "hex": "#643cb1",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 177
  },
  "hsl": {
    "h": 260.513,
    "s": 49.367,
    "l": 46.471
  },
  "oklch": {
    "l": 0.46914,
    "c": 0.17628,
    "h": 294.3
  },
  "luminance": 0.09115
}

Semantic roles & 50–950 ramp

primary

#643CB1

secondary

#AEC485

accent

#D94FAA

background

#F9F7FC

surface

#F2EDF8

border

#CCC8D1

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643CB1

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

Preview Lab → · Contrast checker → · Palette generator →