#643FB7#643FB7

#643FB7 is a mid, vivid violet. Relative luminance 0.097; OKLCH L 47.8% C 0.180 H 292.5°. Best body text is #FFFFFF at 7.15:1 contrast (WCAG AA passes).

Color values

HEX	#643FB7
RGB	rgb(100, 63, 183)
HSL	hsl(259, 49%, 48%)
HSV	hsv(259, 66%, 72%)
CMYK	cmyk(45.4%, 65.6%, 0%, 28.2%)
CIE-LAB	lab(37.27, 44.03, -58.06)
CIE-LCH	lch(37.27, 72.86, 307.18°)
OKLab	oklab(47.82% 0.0686 -0.166)
OKLCH	oklch(47.82% 0.18 292.5)
XYZ	xyz(15.5779, 9.6827, 45.8387)
Luminance	0.0968 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.47

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643FB7 #92B73F

analogous

#3F56B7 #643FB7 #A03FB7

triadic

#643FB7 #B7643F #3FB764

tetradic

#643FB7 #B73F56 #92B73F #3FB7A0

square

#643FB7 #B73F56 #92B73F #3FB7A0

split-complementary

#643FB7 #B7A03F #56B73F

monochromatic

#32205C #4B2F89 #643FB7 #8768CB #AB96DB

Accessibility & contrast

On white

7.15

#643FB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.94

#643FB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643FB7

7.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643FB7	#FFFFFF	#000000	##FFFFFF
##643FB7	1.00	7.15	2.94	7.15
#FFFFFF	7.15	1.00	21.00	1.00
#000000	2.94	21.00	1.00	21.00
##FFFFFF	7.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059BB

Deuteranopia (green-blind)

#0055B5

Tritanopia (blue-blind)

#4C5C75

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #643fb7;
/* rgb */ color: rgb(100, 63, 183);
/* oklch */ color: oklch(47.8% 0.180 292.5);

Tailwind

colors: {
  custom: {
    50: '#9776cd',
    500: '#643fb7',
    950: '#000000',
  },
}

SCSS

$custom: #643fb7;
$custom-light: #9776cd;
$custom-dark: #000000;

JSON

{
  "hex": "#643fb7",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 183
  },
  "hsl": {
    "h": 258.5,
    "s": 48.78,
    "l": 48.235
  },
  "oklch": {
    "l": 0.47823,
    "c": 0.17966,
    "h": 292.5
  },
  "luminance": 0.09683
}

Semantic roles & 50–950 ramp

primary

#643FB7

secondary

#B4C68B

accent

#D84FAE

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0914

muted

#7E7B82

Preview Lab

Preview with #643FB7

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

Preview Lab → · Contrast checker → · Palette generator →