#643DAB#643DAB

#643DAB is a mid, vivid violet. Relative luminance 0.090; OKLCH L 46.6% C 0.168 H 295.5°. Best body text is #FFFFFF at 7.51:1 contrast (WCAG AA passes).

Color values

HEX	#643DAB
RGB	rgb(100, 61, 171)
HSL	hsl(261, 47%, 45%)
HSV	hsv(261, 64%, 67%)
CMYK	cmyk(41.5%, 64.3%, 0%, 32.9%)
CIE-LAB	lab(35.96, 41.80, -53.06)
CIE-LCH	lch(35.96, 67.55, 308.23°)
OKLab	oklab(46.6% 0.0721 -0.1513)
OKLCH	oklch(46.6% 0.168 295.5)
XYZ	xyz(14.2730, 8.9868, 39.5028)
Luminance	0.0899 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643DAB #84AB3D

analogous

#3D4DAB #643DAB #9B3DAB

triadic

#643DAB #AB643D #3DAB64

tetradic

#643DAB #AB3D4D #84AB3D #3DAB9B

square

#643DAB #AB3D4D #84AB3D #3DAB9B

split-complementary

#643DAB #AB9B3D #4DAB3D

monochromatic

#2F1D51 #4A2D7E #643DAB #845FC6 #A68CD6

Accessibility & contrast

On white

7.51

#643DAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#643DAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643DAB

7.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643DAB	#FFFFFF	#000000	##FFFFFF
##643DAB	1.00	7.51	2.80	7.51
#FFFFFF	7.51	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055AE

Deuteranopia (green-blind)

#0053A9

Tritanopia (blue-blind)

#52566E

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #643dab;
/* rgb */ color: rgb(100, 61, 171);
/* oklch */ color: oklch(46.6% 0.168 295.5);

Tailwind

colors: {
  custom: {
    50: '#9675c5',
    500: '#643dab',
    950: '#000000',
  },
}

SCSS

$custom: #643dab;
$custom-light: #9675c5;
$custom-dark: #000000;

JSON

{
  "hex": "#643dab",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 171
  },
  "hsl": {
    "h": 261.273,
    "s": 47.414,
    "l": 45.49
  },
  "oklch": {
    "l": 0.46595,
    "c": 0.16762,
    "h": 295.5
  },
  "luminance": 0.08987
}

Semantic roles & 50–950 ramp

primary

#643DAB

secondary

#ABC183

accent

#D751A7

background

#F9F7FC

surface

#F2EDF8

border

#CCC8D1

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643DAB

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

Preview Lab → · Contrast checker → · Palette generator →