#643CB9#643CB9

#643CB9 is a mid, vivid violet. Relative luminance 0.094; OKLCH L 47.6% C 0.186 H 292.6°. Best body text is #FFFFFF at 7.27:1 contrast (WCAG AA passes).

Color values

HEX	#643CB9
RGB	rgb(100, 60, 185)
HSL	hsl(259, 51%, 48%)
HSV	hsv(259, 68%, 73%)
CMYK	cmyk(45.9%, 67.6%, 0%, 27.5%)
CIE-LAB	lab(36.82, 46.22, -59.96)
CIE-LCH	lch(36.82, 75.70, 307.63°)
OKLab	oklab(47.55% 0.0715 -0.1716)
OKLCH	oklch(47.55% 0.186 292.6)
XYZ	xyz(15.6259, 9.4433, 46.8890)
Luminance	0.0944 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.48

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643CB9 #91B93C

analogous

#3C52B9 #643CB9 #A23CB9

triadic

#643CB9 #B9643C #3CB964

tetradic

#643CB9 #B93C52 #91B93C #3CB9A2

square

#643CB9 #B93C52 #91B93C #3CB9A2

split-complementary

#643CB9 #B9A23C #52B93C

monochromatic

#321E5D #4B2D8B #643CB9 #8665CD #AB93DC

Accessibility & contrast

On white

7.27

#643CB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#643CB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643CB9

7.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643CB9	#FFFFFF	#000000	##FFFFFF
##643CB9	1.00	7.27	2.89	7.27
#FFFFFF	7.27	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058BD

Deuteranopia (green-blind)

#0054B6

Tritanopia (blue-blind)

#4B5B75

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #643cb9;
/* rgb */ color: rgb(100, 60, 185);
/* oklch */ color: oklch(47.6% 0.186 292.6);

Tailwind

colors: {
  custom: {
    50: '#9774cf',
    500: '#643cb9',
    950: '#000000',
  },
}

SCSS

$custom: #643cb9;
$custom-light: #9774cf;
$custom-dark: #000000;

JSON

{
  "hex": "#643cb9",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 185
  },
  "hsl": {
    "h": 259.2,
    "s": 51.02,
    "l": 48.039
  },
  "oklch": {
    "l": 0.47553,
    "c": 0.18589,
    "h": 292.6
  },
  "luminance": 0.09444
}

Semantic roles & 50–950 ramp

primary

#643CB9

secondary

#B4C789

accent

#DA4DAD

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0814

muted

#7E7B82

Preview Lab

Preview with #643CB9

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

Preview Lab → · Contrast checker → · Palette generator →