#643DB5#643DB5

#643DB5 is a mid, vivid violet. Relative luminance 0.094; OKLCH L 47.4% C 0.180 H 293.2°. Best body text is #FFFFFF at 7.30:1 contrast (WCAG AA passes).

Color values

HEX	#643DB5
RGB	rgb(100, 61, 181)
HSL	hsl(260, 50%, 47%)
HSV	hsv(260, 66%, 71%)
CMYK	cmyk(44.8%, 66.3%, 0%, 29%)
CIE-LAB	lab(36.71, 44.57, -57.78)
CIE-LCH	lch(36.71, 72.97, 307.64°)
OKLab	oklab(47.37% 0.071 -0.1652)
OKLCH	oklch(47.37% 0.18 293.2)
XYZ	xyz(15.2625, 9.3826, 44.7140)
Luminance	0.0938 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.91

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643DB5 #8EB53D

analogous

#3D52B5 #643DB5 #A03DB5

triadic

#643DB5 #B5643D #3DB564

tetradic

#643DB5 #B53D52 #8EB53D #3DB5A0

square

#643DB5 #B53D52 #8EB53D #3DB5A0

split-complementary

#643DB5 #B5A03D #52B53D

monochromatic

#311E59 #4B2E87 #643DB5 #8664CB #AA92DA

Accessibility & contrast

On white

7.30

#643DB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#643DB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643DB5

7.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643DB5	#FFFFFF	#000000	##FFFFFF
##643DB5	1.00	7.30	2.88	7.30
#FFFFFF	7.30	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B9

Deuteranopia (green-blind)

#0054B3

Tritanopia (blue-blind)

#4D5A74

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #643db5;
/* rgb */ color: rgb(100, 61, 181);
/* oklch */ color: oklch(47.4% 0.180 293.2);

Tailwind

colors: {
  custom: {
    50: '#9775cc',
    500: '#643db5',
    950: '#000000',
  },
}

SCSS

$custom: #643db5;
$custom-light: #9775cc;
$custom-dark: #000000;

JSON

{
  "hex": "#643db5",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 181
  },
  "hsl": {
    "h": 259.5,
    "s": 49.587,
    "l": 47.451
  },
  "oklch": {
    "l": 0.47374,
    "c": 0.17981,
    "h": 293.2
  },
  "luminance": 0.09383
}

Semantic roles & 50–950 ramp

primary

#643DB5

secondary

#B2C588

accent

#D94FAC

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643DB5

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

Preview Lab → · Contrast checker → · Palette generator →