#643FBB#643FBB

#643FBB is a mid, vivid violet. Relative luminance 0.099; OKLCH L 48.1% C 0.185 H 291.7°. Best body text is #FFFFFF at 7.07:1 contrast (WCAG AA passes).

Color values

HEX	#643FBB
RGB	rgb(100, 63, 187)
HSL	hsl(258, 50%, 49%)
HSV	hsv(258, 66%, 73%)
CMYK	cmyk(46.5%, 66.3%, 0%, 26.7%)
CIE-LAB	lab(37.57, 45.15, -59.91)
CIE-LCH	lch(37.57, 75.02, 307.00°)
OKLab	oklab(48.14% 0.0681 -0.1715)
OKLCH	oklch(48.14% 0.185 291.7)
XYZ	xyz(16.0002, 9.8516, 48.0626)
Luminance	0.0985 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 1.89

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643FBB #96BB3F

analogous

#3F58BB #643FBB #A23FBB

triadic

#643FBB #BB643F #3FBB64

tetradic

#643FBB #BB3F58 #96BB3F #3FBBA2

square

#643FBB #BB3F58 #96BB3F #3FBBA2

split-complementary

#643FBB #BBA23F #58BB3F

monochromatic

#33205F #4C308D #643FBB #886ACD #AC98DC

Accessibility & contrast

On white

7.07

#643FBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#643FBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643FBB

7.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643FBB	#FFFFFF	#000000	##FFFFFF
##643FBB	1.00	7.07	2.97	7.07
#FFFFFF	7.07	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ABF

Deuteranopia (green-blind)

#0056B8

Tritanopia (blue-blind)

#495D77

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #643fbb;
/* rgb */ color: rgb(100, 63, 187);
/* oklch */ color: oklch(48.1% 0.185 291.7);

Tailwind

colors: {
  custom: {
    50: '#9776d0',
    500: '#643fbb',
    950: '#000000',
  },
}

SCSS

$custom: #643fbb;
$custom-light: #9776d0;
$custom-dark: #000000;

JSON

{
  "hex": "#643fbb",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 187
  },
  "hsl": {
    "h": 257.903,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.48142,
    "c": 0.18452,
    "h": 291.7
  },
  "luminance": 0.09852
}

Semantic roles & 50–950 ramp

primary

#643FBB

secondary

#B7C88E

accent

#D94FB0

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0914

muted

#7E7B82

Preview Lab

Preview with #643FBB

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

Preview Lab → · Contrast checker → · Palette generator →