#643AB3#643AB3

#643AB3 is a mid, vivid violet. Relative luminance 0.090; OKLCH L 46.8% C 0.181 H 294.2°. Best body text is #FFFFFF at 7.51:1 contrast (WCAG AA passes).

Color values

HEX	#643AB3
RGB	rgb(100, 58, 179)
HSL	hsl(261, 51%, 46%)
HSV	hsv(261, 68%, 70%)
CMYK	cmyk(44.1%, 67.6%, 0%, 29.8%)
CIE-LAB	lab(35.96, 45.63, -57.81)
CIE-LCH	lch(35.96, 73.65, 308.29°)
OKLab	oklab(46.79% 0.0744 -0.1653)
OKLCH	oklch(46.79% 0.181 294.2)
XYZ	xyz(14.9031, 8.9897, 43.5891)
Luminance	0.0899 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 3.51

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643AB3 #89B33A

analogous

#3A4DB3 #643AB3 #A13AB3

triadic

#643AB3 #B3643A #3AB364

tetradic

#643AB3 #B33A4D #89B33A #3AB3A1

square

#643AB3 #B33A4D #89B33A #3AB3A1

split-complementary

#643AB3 #B3A13A #4DB33A

monochromatic

#301C57 #4A2B85 #643AB3 #855FCB #A88DDA

Accessibility & contrast

On white

7.51

#643AB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#643AB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643AB3

7.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643AB3	#FFFFFF	#000000	##FFFFFF
##643AB3	1.00	7.51	2.80	7.51
#FFFFFF	7.51	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B7

Deuteranopia (green-blind)

#0053B1

Tritanopia (blue-blind)

#4E5772

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #643ab3;
/* rgb */ color: rgb(100, 58, 179);
/* oklch */ color: oklch(46.8% 0.181 294.2);

Tailwind

colors: {
  custom: {
    50: '#9773cb',
    500: '#643ab3',
    950: '#000000',
  },
}

SCSS

$custom: #643ab3;
$custom-light: #9773cb;
$custom-dark: #000000;

JSON

{
  "hex": "#643ab3",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 179
  },
  "hsl": {
    "h": 260.826,
    "s": 51.055,
    "l": 46.471
  },
  "oklch": {
    "l": 0.46789,
    "c": 0.18126,
    "h": 294.2
  },
  "luminance": 0.0899
}

Semantic roles & 50–950 ramp

primary

#643AB3

secondary

#AEC584

accent

#DB4DA9

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643AB3

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

Preview Lab → · Contrast checker → · Palette generator →