#643CB5#643CB5

#643CB5 is a mid, vivid violet. Relative luminance 0.093; OKLCH L 47.2% C 0.181 H 293.4°. Best body text is #FFFFFF at 7.35:1 contrast (WCAG AA passes).

Color values

HEX	#643CB5
RGB	rgb(100, 60, 181)
HSL	hsl(260, 50%, 47%)
HSV	hsv(260, 67%, 71%)
CMYK	cmyk(44.8%, 66.9%, 0%, 29%)
CIE-LAB	lab(36.51, 45.11, -58.10)
CIE-LCH	lch(36.51, 73.56, 307.83°)
OKLab	oklab(47.23% 0.072 -0.1662)
OKLCH	oklch(47.23% 0.181 293.4)
XYZ	xyz(15.2096, 9.2768, 44.6963)
Luminance	0.0928 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 3.01

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643CB5 #8DB53C

analogous

#3C50B5 #643CB5 #A13CB5

triadic

#643CB5 #B5643C #3CB564

tetradic

#643CB5 #B53C50 #8DB53C #3CB5A1

square

#643CB5 #B53C50 #8DB53C #3CB5A1

split-complementary

#643CB5 #B5A13C #50B53C

monochromatic

#311E59 #4B2D87 #643CB5 #8563CB #A991DB

Accessibility & contrast

On white

7.35

#643CB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.86

#643CB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643CB5

7.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643CB5	#FFFFFF	#000000	##FFFFFF
##643CB5	1.00	7.35	2.86	7.35
#FFFFFF	7.35	1.00	21.00	1.00
#000000	2.86	21.00	1.00	21.00
##FFFFFF	7.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B9

Deuteranopia (green-blind)

#0054B3

Tritanopia (blue-blind)

#4D5973

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #643cb5;
/* rgb */ color: rgb(100, 60, 181);
/* oklch */ color: oklch(47.2% 0.181 293.4);

Tailwind

colors: {
  custom: {
    50: '#9774cc',
    500: '#643cb5',
    950: '#000000',
  },
}

SCSS

$custom: #643cb5;
$custom-light: #9774cc;
$custom-dark: #000000;

JSON

{
  "hex": "#643cb5",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 181
  },
  "hsl": {
    "h": 259.835,
    "s": 50.207,
    "l": 47.255
  },
  "oklch": {
    "l": 0.47231,
    "c": 0.1811,
    "h": 293.4
  },
  "luminance": 0.09277
}

Semantic roles & 50–950 ramp

primary

#643CB5

secondary

#B1C687

accent

#DA4EAC

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643CB5

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

Preview Lab → · Contrast checker → · Palette generator →