#643BB4#643BB4

#643BB4 is a mid, vivid violet. Relative luminance 0.091; OKLCH L 47.0% C 0.181 H 293.8°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#643BB4
RGB	rgb(100, 59, 180)
HSL	hsl(260, 51%, 47%)
HSV	hsv(260, 67%, 71%)
CMYK	cmyk(44.4%, 67.2%, 0%, 29.4%)
CIE-LAB	lab(36.24, 45.37, -57.96)
CIE-LCH	lch(36.24, 73.60, 308.06°)
OKLab	oklab(47.01% 0.0732 -0.1657)
OKLCH	oklch(47.01% 0.181 293.8)
XYZ	xyz(15.0555, 9.1321, 44.1406)
Luminance	0.0913 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 3.26

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643BB4 #8BB43B

analogous

#3B4EB4 #643BB4 #A13BB4

triadic

#643BB4 #B4643B #3BB464

tetradic

#643BB4 #B43B4E #8BB43B #3BB4A1

square

#643BB4 #B43B4E #8BB43B #3BB4A1

split-complementary

#643BB4 #B4A13B #4EB43B

monochromatic

#311D58 #4A2C86 #643BB4 #8561CB #A98FDA

Accessibility & contrast

On white

7.43

#643BB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#643BB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643BB4

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643BB4	#FFFFFF	#000000	##FFFFFF
##643BB4	1.00	7.43	2.83	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B8

Deuteranopia (green-blind)

#0053B2

Tritanopia (blue-blind)

#4D5872

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #643bb4;
/* rgb */ color: rgb(100, 59, 180);
/* oklch */ color: oklch(47.0% 0.181 293.8);

Tailwind

colors: {
  custom: {
    50: '#9774cb',
    500: '#643bb4',
    950: '#000000',
  },
}

SCSS

$custom: #643bb4;
$custom-light: #9774cb;
$custom-dark: #000000;

JSON

{
  "hex": "#643bb4",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 180
  },
  "hsl": {
    "h": 260.331,
    "s": 50.628,
    "l": 46.863
  },
  "oklch": {
    "l": 0.4701,
    "c": 0.18118,
    "h": 293.8
  },
  "luminance": 0.09133
}

Semantic roles & 50–950 ramp

primary

#643BB4

secondary

#B0C586

accent

#DA4EAB

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643BB4

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

Preview Lab → · Contrast checker → · Palette generator →