#643AB7#643AB7

#643AB7 is a mid, vivid violet. Relative luminance 0.092; OKLCH L 47.1% C 0.186 H 293.4°. Best body text is #FFFFFF at 7.42:1 contrast (WCAG AA passes).

Color values

HEX	#643AB7
RGB	rgb(100, 58, 183)
HSL	hsl(260, 52%, 47%)
HSV	hsv(260, 68%, 72%)
CMYK	cmyk(45.4%, 68.3%, 0%, 28.2%)
CIE-LAB	lab(36.28, 46.73, -59.66)
CIE-LCH	lch(36.28, 75.79, 308.07°)
OKLab	oklab(47.11% 0.0738 -0.1708)
OKLCH	oklch(47.11% 0.186 293.4)
XYZ	xyz(15.3135, 9.1539, 45.7506)
Luminance	0.0915 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 3.00

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643AB7 #8DB73A

analogous

#3A4FB7 #643AB7 #A33AB7

triadic

#643AB7 #B7643A #3AB764

tetradic

#643AB7 #B73A4F #8DB73A #3AB7A3

square

#643AB7 #B73A4F #8DB73A #3AB7A3

split-complementary

#643AB7 #B7A33A #4FB73A

monochromatic

#311D5A #4B2B89 #643AB7 #8561CD #A990DC

Accessibility & contrast

On white

7.42

#643AB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#643AB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643AB7

7.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643AB7	#FFFFFF	#000000	##FFFFFF
##643AB7	1.00	7.42	2.83	7.42
#FFFFFF	7.42	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057BB

Deuteranopia (green-blind)

#0053B4

Tritanopia (blue-blind)

#4C5974

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #643ab7;
/* rgb */ color: rgb(100, 58, 183);
/* oklch */ color: oklch(47.1% 0.186 293.4);

Tailwind

colors: {
  custom: {
    50: '#9773ce',
    500: '#643ab7',
    950: '#000000',
  },
}

SCSS

$custom: #643ab7;
$custom-light: #9773ce;
$custom-dark: #000000;

JSON

{
  "hex": "#643ab7",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 183
  },
  "hsl": {
    "h": 260.16,
    "s": 51.867,
    "l": 47.255
  },
  "oklch": {
    "l": 0.47113,
    "c": 0.186,
    "h": 293.4
  },
  "luminance": 0.09154
}

Semantic roles & 50–950 ramp

primary

#643AB7

secondary

#B1C786

accent

#DB4CAB

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0814

muted

#7E7B82

Preview Lab

Preview with #643AB7

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

Preview Lab → · Contrast checker → · Palette generator →