#643FB5#643FB5

#643FB5 is a mid, vivid violet. Relative luminance 0.096; OKLCH L 47.7% C 0.177 H 292.9°. Best body text is #FFFFFF at 7.19:1 contrast (WCAG AA passes).

Color values

HEX	#643FB5
RGB	rgb(100, 63, 181)
HSL	hsl(259, 48%, 48%)
HSV	hsv(259, 65%, 71%)
CMYK	cmyk(44.8%, 65.2%, 0%, 29%)
CIE-LAB	lab(37.11, 43.47, -57.12)
CIE-LCH	lch(37.11, 71.78, 307.27°)
OKLab	oklab(47.67% 0.0688 -0.1633)
OKLCH	oklch(47.67% 0.177 292.9)
XYZ	xyz(15.3712, 9.6001, 44.7502)
Luminance	0.0960 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.77

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643FB5 #90B53F

analogous

#3F55B5 #643FB5 #9F3FB5

triadic

#643FB5 #B5643F #3FB564

tetradic

#643FB5 #B53F55 #90B53F #3FB59F

square

#643FB5 #B53F55 #90B53F #3FB59F

split-complementary

#643FB5 #B59F3F #55B53F

monochromatic

#321F5A #4B2F88 #643FB5 #8667CA #AA94DA

Accessibility & contrast

On white

7.19

#643FB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#643FB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643FB5

7.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643FB5	#FFFFFF	#000000	##FFFFFF
##643FB5	1.00	7.19	2.92	7.19
#FFFFFF	7.19	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059B9

Deuteranopia (green-blind)

#0055B3

Tritanopia (blue-blind)

#4D5B74

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #643fb5;
/* rgb */ color: rgb(100, 63, 181);
/* oklch */ color: oklch(47.7% 0.177 292.9);

Tailwind

colors: {
  custom: {
    50: '#9776cc',
    500: '#643fb5',
    950: '#000000',
  },
}

SCSS

$custom: #643fb5;
$custom-light: #9776cc;
$custom-dark: #000000;

JSON

{
  "hex": "#643fb5",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 181
  },
  "hsl": {
    "h": 258.814,
    "s": 48.361,
    "l": 47.843
  },
  "oklch": {
    "l": 0.47666,
    "c": 0.17721,
    "h": 292.9
  },
  "luminance": 0.09601
}

Semantic roles & 50–950 ramp

primary

#643FB5

secondary

#B3C58A

accent

#D850AD

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0913

muted

#7E7B82

Preview Lab

Preview with #643FB5

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

Preview Lab → · Contrast checker → · Palette generator →