#643EB4#643EB4

#643EB4 is a mid, vivid violet. Relative luminance 0.095; OKLCH L 47.4% C 0.177 H 293.3°. Best body text is #FFFFFF at 7.27:1 contrast (WCAG AA passes).

Color values

HEX	#643EB4
RGB	rgb(100, 62, 180)
HSL	hsl(259, 49%, 47%)
HSV	hsv(259, 66%, 71%)
CMYK	cmyk(44.4%, 65.6%, 0%, 29.4%)
CIE-LAB	lab(36.84, 43.74, -56.98)
CIE-LCH	lch(36.84, 71.84, 307.51°)
OKLab	oklab(47.44% 0.07 -0.1629)
OKLCH	oklch(47.44% 0.177 293.3)
XYZ	xyz(15.2141, 9.4494, 44.1935)
Luminance	0.0945 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.98

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643EB4 #8EB43E

analogous

#3E53B4 #643EB4 #9F3EB4

triadic

#643EB4 #B4643E #3EB464

tetradic

#643EB4 #B43E53 #8EB43E #3EB49F

square

#643EB4 #B43E53 #8EB43E #3EB49F

split-complementary

#643EB4 #B49F3E #53B43E

monochromatic

#311F59 #4B2E86 #643EB4 #8665CA #AA93DA

Accessibility & contrast

On white

7.27

#643EB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#643EB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643EB4

7.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643EB4	#FFFFFF	#000000	##FFFFFF
##643EB4	1.00	7.27	2.89	7.27
#FFFFFF	7.27	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B8

Deuteranopia (green-blind)

#0054B2

Tritanopia (blue-blind)

#4D5A73

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #643eb4;
/* rgb */ color: rgb(100, 62, 180);
/* oklch */ color: oklch(47.4% 0.177 293.3);

Tailwind

colors: {
  custom: {
    50: '#9676cb',
    500: '#643eb4',
    950: '#000000',
  },
}

SCSS

$custom: #643eb4;
$custom-light: #9676cb;
$custom-dark: #000000;

JSON

{
  "hex": "#643eb4",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 180
  },
  "hsl": {
    "h": 259.322,
    "s": 48.76,
    "l": 47.451
  },
  "oklch": {
    "l": 0.4744,
    "c": 0.17729,
    "h": 293.3
  },
  "luminance": 0.0945
}

Semantic roles & 50–950 ramp

primary

#643EB4

secondary

#B2C589

accent

#D84FAC

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643EB4

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

Preview Lab → · Contrast checker → · Palette generator →