#643EB8#643EB8

#643EB8 is a mid, vivid violet. Relative luminance 0.096; OKLCH L 47.8% C 0.182 H 292.4°. Best body text is #FFFFFF at 7.18:1 contrast (WCAG AA passes).

Color values

HEX	#643EB8
RGB	rgb(100, 62, 184)
HSL	hsl(259, 50%, 48%)
HSV	hsv(259, 66%, 72%)
CMYK	cmyk(45.7%, 66.3%, 0%, 27.8%)
CIE-LAB	lab(37.14, 44.86, -58.85)
CIE-LCH	lch(37.14, 74.00, 307.32°)
OKLab	oklab(47.76% 0.0695 -0.1684)
OKLCH	oklch(47.76% 0.182 292.4)
XYZ	xyz(15.6275, 9.6148, 46.3705)
Luminance	0.0961 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.40

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643EB8 #92B83E

analogous

#3E55B8 #643EB8 #A13EB8

triadic

#643EB8 #B8643E #3EB864

tetradic

#643EB8 #B83E55 #92B83E #3EB8A1

square

#643EB8 #B83E55 #92B83E #3EB8A1

split-complementary

#643EB8 #B8A13E #55B83E

monochromatic

#321F5C #4B2F8A #643EB8 #8767CC #AB95DB

Accessibility & contrast

On white

7.18

#643EB8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#643EB8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643EB8

7.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643EB8	#FFFFFF	#000000	##FFFFFF
##643EB8	1.00	7.18	2.92	7.18
#FFFFFF	7.18	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059BC

Deuteranopia (green-blind)

#0055B6

Tritanopia (blue-blind)

#4B5B76

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #643eb8;
/* rgb */ color: rgb(100, 62, 184);
/* oklch */ color: oklch(47.8% 0.182 292.4);

Tailwind

colors: {
  custom: {
    50: '#9776ce',
    500: '#643eb8',
    950: '#000000',
  },
}

SCSS

$custom: #643eb8;
$custom-light: #9776ce;
$custom-dark: #000000;

JSON

{
  "hex": "#643eb8",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 184
  },
  "hsl": {
    "h": 258.689,
    "s": 49.593,
    "l": 48.235
  },
  "oklch": {
    "l": 0.47757,
    "c": 0.18216,
    "h": 292.4
  },
  "luminance": 0.09615
}

Semantic roles & 50–950 ramp

primary

#643EB8

secondary

#B4C78B

accent

#D94FAE

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0814

muted

#7E7B82

Preview Lab

Preview with #643EB8

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

Preview Lab → · Contrast checker → · Palette generator →