#643CB4#643CB4

#643CB4 is a mid, vivid violet. Relative luminance 0.092; OKLCH L 47.2% C 0.180 H 293.6°. Best body text is #FFFFFF at 7.38:1 contrast (WCAG AA passes).

Color values

HEX	#643CB4
RGB	rgb(100, 60, 180)
HSL	hsl(260, 50%, 47%)
HSV	hsv(260, 67%, 71%)
CMYK	cmyk(44.4%, 66.7%, 0%, 29.4%)
CIE-LAB	lab(36.43, 44.83, -57.64)
CIE-LCH	lch(36.43, 73.02, 307.88°)
OKLab	oklab(47.15% 0.0721 -0.1648)
OKLCH	oklch(47.15% 0.18 293.6)
XYZ	xyz(15.1074, 9.2359, 44.1579)
Luminance	0.0924 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 3.15

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643CB4 #8CB43C

analogous

#3C50B4 #643CB4 #A03CB4

triadic

#643CB4 #B4643C #3CB464

tetradic

#643CB4 #B43C50 #8CB43C #3CB4A0

square

#643CB4 #B43C50 #8CB43C #3CB4A0

split-complementary

#643CB4 #B4A03C #50B43C

monochromatic

#311D58 #4B2D86 #643CB4 #8562CB #A990DA

Accessibility & contrast

On white

7.38

#643CB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.85

#643CB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643CB4

7.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643CB4	#FFFFFF	#000000	##FFFFFF
##643CB4	1.00	7.38	2.85	7.38
#FFFFFF	7.38	1.00	21.00	1.00
#000000	2.85	21.00	1.00	21.00
##FFFFFF	7.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B8

Deuteranopia (green-blind)

#0054B2

Tritanopia (blue-blind)

#4D5973

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #643cb4;
/* rgb */ color: rgb(100, 60, 180);
/* oklch */ color: oklch(47.2% 0.180 293.6);

Tailwind

colors: {
  custom: {
    50: '#9774cb',
    500: '#643cb4',
    950: '#000000',
  },
}

SCSS

$custom: #643cb4;
$custom-light: #9774cb;
$custom-dark: #000000;

JSON

{
  "hex": "#643cb4",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 180
  },
  "hsl": {
    "h": 260,
    "s": 50,
    "l": 47.059
  },
  "oklch": {
    "l": 0.47151,
    "c": 0.1799,
    "h": 293.6
  },
  "luminance": 0.09236
}

Semantic roles & 50–950 ramp

primary

#643CB4

secondary

#B0C587

accent

#DA4EAB

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643CB4

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

Preview Lab → · Contrast checker → · Palette generator →