#643F9F#643F9F

#643F9F is a mid, vivid violet. Relative luminance 0.088; OKLCH L 46.0% C 0.150 H 298.0°. Best body text is #FFFFFF at 7.63:1 contrast (WCAG AA passes).

Color values

HEX	#643F9F
RGB	rgb(100, 63, 159)
HSL	hsl(263, 43%, 44%)
HSV	hsv(263, 60%, 62%)
CMYK	cmyk(37.1%, 60.4%, 0%, 37.6%)
CIE-LAB	lab(35.53, 37.39, -46.55)
CIE-LCH	lch(35.53, 59.71, 308.77°)
OKLab	oklab(46.02% 0.0704 -0.1322)
OKLCH	oklch(46.02% 0.15 298)
XYZ	xyz(13.2895, 8.7674, 33.7863)
Luminance	0.0877 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F9F #7A9F3F

analogous

#3F4A9F #643F9F #943F9F

triadic

#643F9F #9F643F #3F9F64

tetradic

#643F9F #9F3F4A #7A9F3F #3F9F94

square

#643F9F #9F3F4A #7A9F3F #3F9F94

split-complementary

#643F9F #9F943F #4A9F3F

monochromatic

#2D1C47 #482E73 #643F9F #825DBF #A488D0

Accessibility & contrast

On white

7.63

#643F9F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#643F9F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F9F

7.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F9F	#FFFFFF	#000000	##FFFFFF
##643F9F	1.00	7.63	2.75	7.63
#FFFFFF	7.63	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0254A2

Deuteranopia (green-blind)

#1A539D

Tritanopia (blue-blind)

#575369

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #643f9f;
/* rgb */ color: rgb(100, 63, 159);
/* oklch */ color: oklch(46.0% 0.150 298.0);

Tailwind

colors: {
  custom: {
    50: '#9476bc',
    500: '#643f9f',
    950: '#000000',
  },
}

SCSS

$custom: #643f9f;
$custom-light: #9476bc;
$custom-dark: #000000;

JSON

{
  "hex": "#643f9f",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 159
  },
  "hsl": {
    "h": 263.125,
    "s": 43.243,
    "l": 43.529
  },
  "oklch": {
    "l": 0.46015,
    "c": 0.14978,
    "h": 298
  },
  "luminance": 0.08768
}

Semantic roles & 50–950 ramp

primary

#643F9F

secondary

#A4BB7F

accent

#D355A2

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643F9F

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

Preview Lab → · Contrast checker → · Palette generator →