#643DBA#643DBA

#643DBA is a mid, vivid violet. Relative luminance 0.096; OKLCH L 47.8% C 0.186 H 292.2°. Best body text is #FFFFFF at 7.20:1 contrast (WCAG AA passes).

Color values

HEX	#643DBA
RGB	rgb(100, 61, 186)
HSL	hsl(259, 51%, 48%)
HSV	hsv(259, 67%, 73%)
CMYK	cmyk(46.2%, 67.2%, 0%, 27.1%)
CIE-LAB	lab(37.10, 45.96, -60.10)
CIE-LCH	lch(37.10, 75.66, 307.41°)
OKLab	oklab(47.78% 0.0703 -0.172)
OKLCH	oklch(47.78% 0.186 292.2)
XYZ	xyz(15.7847, 9.5915, 47.4645)
Luminance	0.0959 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.23

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643DBA #93BA3D

analogous

#3D54BA #643DBA #A23DBA

triadic

#643DBA #BA643D #3DBA64

tetradic

#643DBA #BA3D54 #93BA3D #3DBAA2

square

#643DBA #BA3D54 #93BA3D #3DBAA2

split-complementary

#643DBA #BAA23D #54BA3D

monochromatic

#321F5E #4B2E8C #643DBA #8767CD #AB95DC

Accessibility & contrast

On white

7.20

#643DBA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#643DBA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643DBA

7.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643DBA	#FFFFFF	#000000	##FFFFFF
##643DBA	1.00	7.20	2.92	7.20
#FFFFFF	7.20	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059BE

Deuteranopia (green-blind)

#0055B7

Tritanopia (blue-blind)

#4A5C76

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #643dba;
/* rgb */ color: rgb(100, 61, 186);
/* oklch */ color: oklch(47.8% 0.186 292.2);

Tailwind

colors: {
  custom: {
    50: '#9775d0',
    500: '#643dba',
    950: '#000000',
  },
}

SCSS

$custom: #643dba;
$custom-light: #9775d0;
$custom-dark: #000000;

JSON

{
  "hex": "#643dba",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 186
  },
  "hsl": {
    "h": 258.72,
    "s": 50.607,
    "l": 48.431
  },
  "oklch": {
    "l": 0.47775,
    "c": 0.18584,
    "h": 292.2
  },
  "luminance": 0.09592
}

Semantic roles & 50–950 ramp

primary

#643DBA

secondary

#B5C88B

accent

#DA4EAE

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0814

muted

#7E7B82

Preview Lab

Preview with #643DBA

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

Preview Lab → · Contrast checker → · Palette generator →