#643FB1#643FB1

#643FB1 is a mid, vivid violet. Relative luminance 0.094; OKLCH L 47.4% C 0.172 H 293.7°. Best body text is #FFFFFF at 7.27:1 contrast (WCAG AA passes).

Color values

HEX	#643FB1
RGB	rgb(100, 63, 177)
HSL	hsl(259, 48%, 47%)
HSV	hsv(259, 64%, 69%)
CMYK	cmyk(43.5%, 64.4%, 0%, 30.6%)
CIE-LAB	lab(36.81, 42.35, -55.24)
CIE-LCH	lch(36.81, 69.61, 307.48°)
OKLab	oklab(47.35% 0.0693 -0.1578)
OKLCH	oklch(47.35% 0.172 293.7)
XYZ	xyz(14.9667, 9.4383, 42.6197)
Luminance	0.0944 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643FB1 #8CB13F

analogous

#3F53B1 #643FB1 #9D3FB1

triadic

#643FB1 #B1643F #3FB164

tetradic

#643FB1 #B13F53 #8CB13F #3FB19D

square

#643FB1 #B13F53 #8CB13F #3FB19D

split-complementary

#643FB1 #B19D3F #53B13F

monochromatic

#311F57 #4B2F84 #643FB1 #8565C8 #A992D8

Accessibility & contrast

On white

7.27

#643FB1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#643FB1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643FB1

7.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643FB1	#FFFFFF	#000000	##FFFFFF
##643FB1	1.00	7.27	2.89	7.27
#FFFFFF	7.27	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B5

Deuteranopia (green-blind)

#0055AF

Tritanopia (blue-blind)

#4F5A72

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #643fb1;
/* rgb */ color: rgb(100, 63, 177);
/* oklch */ color: oklch(47.4% 0.172 293.7);

Tailwind

colors: {
  custom: {
    50: '#9676c9',
    500: '#643fb1',
    950: '#000000',
  },
}

SCSS

$custom: #643fb1;
$custom-light: #9676c9;
$custom-dark: #000000;

JSON

{
  "hex": "#643fb1",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 177
  },
  "hsl": {
    "h": 259.474,
    "s": 47.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.47354,
    "c": 0.17229,
    "h": 293.7
  },
  "luminance": 0.09439
}

Semantic roles & 50–950 ramp

primary

#643FB1

secondary

#B0C488

accent

#D751AB

background

#F9F7FC

surface

#F2EDF8

border

#CCC8D1

text

#0E0913

muted

#7E7B82

Preview Lab

Preview with #643FB1

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

Preview Lab → · Contrast checker → · Palette generator →