#643A9E#643A9E

#643A9E is a mid, vivid violet. Relative luminance 0.082; OKLCH L 45.2% C 0.156 H 299.4°. Best body text is #FFFFFF at 7.95:1 contrast (WCAG AA passes).

Color values

HEX	#643A9E
RGB	rgb(100, 58, 158)
HSL	hsl(265, 46%, 42%)
HSV	hsv(265, 63%, 62%)
CMYK	cmyk(36.7%, 63.3%, 0%, 38%)
CIE-LAB	lab(34.40, 39.95, -47.77)
CIE-LCH	lch(34.40, 62.27, 309.91°)
OKLab	oklab(45.17% 0.0766 -0.1358)
OKLCH	oklch(45.17% 0.156 299.4)
XYZ	xyz(12.9386, 8.2039, 33.2430)
Luminance	0.0820 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643A9E #749E3A

analogous

#3A429E #643A9E #963A9E

triadic

#643A9E #9E643A #3A9E64

tetradic

#643A9E #9E3A42 #749E3A #3A9E96

square

#643A9E #9E3A42 #749E3A #3A9E96

split-complementary

#643A9E #9E963A #429E3A

monochromatic

#2B1944 #482A71 #643A9E #8255C0 #A381D1

Accessibility & contrast

On white

7.95

#643A9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#643A9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643A9E

7.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643A9E	#FFFFFF	#000000	##FFFFFF
##643A9E	1.00	7.95	2.64	7.95
#FFFFFF	7.95	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A1

Deuteranopia (green-blind)

#10509C

Tritanopia (blue-blind)

#575066

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #643a9e;
/* rgb */ color: rgb(100, 58, 158);
/* oklch */ color: oklch(45.2% 0.156 299.4);

Tailwind

colors: {
  custom: {
    50: '#9472bb',
    500: '#643a9e',
    950: '#000000',
  },
}

SCSS

$custom: #643a9e;
$custom-light: #9472bb;
$custom-dark: #000000;

JSON

{
  "hex": "#643a9e",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 158
  },
  "hsl": {
    "h": 265.2,
    "s": 46.296,
    "l": 42.353
  },
  "oklch": {
    "l": 0.45171,
    "c": 0.15589,
    "h": 299.4
  },
  "luminance": 0.08204
}

Semantic roles & 50–950 ramp

primary

#643A9E

secondary

#9FBB79

accent

#D6529E

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643A9E

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

Preview Lab → · Contrast checker → · Palette generator →