#643EB5#643EB5

#643EB5 is a mid, vivid violet. Relative luminance 0.095; OKLCH L 47.5% C 0.179 H 293.1°. Best body text is #FFFFFF at 7.25:1 contrast (WCAG AA passes).

Color values

HEX	#643EB5
RGB	rgb(100, 62, 181)
HSL	hsl(259, 49%, 48%)
HSV	hsv(259, 66%, 71%)
CMYK	cmyk(44.8%, 65.7%, 0%, 29%)
CIE-LAB	lab(36.91, 44.02, -57.45)
CIE-LCH	lch(36.91, 72.38, 307.46°)
OKLab	oklab(47.52% 0.0699 -0.1643)
OKLCH	oklch(47.52% 0.179 293.1)
XYZ	xyz(15.3164, 9.4903, 44.7319)
Luminance	0.0949 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.83

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643EB5 #8FB53E

analogous

#3E53B5 #643EB5 #A03EB5

triadic

#643EB5 #B5643E #3EB564

tetradic

#643EB5 #B53E53 #8FB53E #3EB5A0

square

#643EB5 #B53E53 #8FB53E #3EB5A0

split-complementary

#643EB5 #B5A03E #53B53E

monochromatic

#321F5A #4B2E87 #643EB5 #8666CA #AA93DA

Accessibility & contrast

On white

7.25

#643EB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.90

#643EB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643EB5

7.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643EB5	#FFFFFF	#000000	##FFFFFF
##643EB5	1.00	7.25	2.90	7.25
#FFFFFF	7.25	1.00	21.00	1.00
#000000	2.90	21.00	1.00	21.00
##FFFFFF	7.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B9

Deuteranopia (green-blind)

#0055B3

Tritanopia (blue-blind)

#4D5A74

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #643eb5;
/* rgb */ color: rgb(100, 62, 181);
/* oklch */ color: oklch(47.5% 0.179 293.1);

Tailwind

colors: {
  custom: {
    50: '#9776cc',
    500: '#643eb5',
    950: '#000000',
  },
}

SCSS

$custom: #643eb5;
$custom-light: #9776cc;
$custom-dark: #000000;

JSON

{
  "hex": "#643eb5",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 181
  },
  "hsl": {
    "h": 259.16,
    "s": 48.971,
    "l": 47.647
  },
  "oklch": {
    "l": 0.47519,
    "c": 0.17851,
    "h": 293.1
  },
  "luminance": 0.09491
}

Semantic roles & 50–950 ramp

primary

#643EB5

secondary

#B2C589

accent

#D94FAD

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643EB5

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

Preview Lab → · Contrast checker → · Palette generator →