#643BBB#643BBB

#643BBB is a mid, vivid violet. Relative luminance 0.094; OKLCH L 47.6% C 0.190 H 292.4°. Best body text is #FFFFFF at 7.28:1 contrast (WCAG AA passes).

Color values

HEX	#643BBB
RGB	rgb(100, 59, 187)
HSL	hsl(259, 52%, 48%)
HSV	hsv(259, 68%, 73%)
CMYK	cmyk(46.5%, 68.4%, 0%, 26.7%)
CIE-LAB	lab(36.79, 47.30, -61.19)
CIE-LCH	lch(36.79, 77.34, 307.71°)
OKLab	oklab(47.58% 0.0721 -0.1752)
OKLCH	oklch(47.58% 0.19 292.4)
XYZ	xyz(15.7866, 9.4246, 47.9914)
Luminance	0.0943 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.37

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643BBB #92BB3B

analogous

#3B52BB #643BBB #A43BBB

triadic

#643BBB #BB643B #3BBB64

tetradic

#643BBB #BB3B52 #92BB3B #3BBBA4

square

#643BBB #BB3B52 #92BB3B #3BBBA4

split-complementary

#643BBB #BBA43B #52BB3B

monochromatic

#321E5E #4B2C8C #643BBB #8765CE #AB93DD

Accessibility & contrast

On white

7.28

#643BBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#643BBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643BBB

7.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643BBB	#FFFFFF	#000000	##FFFFFF
##643BBB	1.00	7.28	2.89	7.28
#FFFFFF	7.28	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058BF

Deuteranopia (green-blind)

#0054B8

Tritanopia (blue-blind)

#4A5B76

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #643bbb;
/* rgb */ color: rgb(100, 59, 187);
/* oklch */ color: oklch(47.6% 0.190 292.4);

Tailwind

colors: {
  custom: {
    50: '#9874d0',
    500: '#643bbb',
    950: '#000000',
  },
}

SCSS

$custom: #643bbb;
$custom-light: #9874d0;
$custom-dark: #000000;

JSON

{
  "hex": "#643bbb",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 187
  },
  "hsl": {
    "h": 259.219,
    "s": 52.033,
    "l": 48.235
  },
  "oklch": {
    "l": 0.47578,
    "c": 0.18951,
    "h": 292.4
  },
  "luminance": 0.09425
}

Semantic roles & 50–950 ramp

primary

#643BBB

secondary

#B4C88A

accent

#DB4CAE

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0814

muted

#7E7B82

Preview Lab

Preview with #643BBB

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

Preview Lab → · Contrast checker → · Palette generator →