#643DBB#643DBB

#643DBB is a mid, vivid violet. Relative luminance 0.096; OKLCH L 47.9% C 0.187 H 292.0°. Best body text is #FFFFFF at 7.17:1 contrast (WCAG AA passes).

Color values

HEX	#643DBB
RGB	rgb(100, 61, 187)
HSL	hsl(259, 51%, 49%)
HSV	hsv(259, 67%, 73%)
CMYK	cmyk(46.5%, 67.4%, 0%, 26.7%)
CIE-LAB	lab(37.18, 46.24, -60.56)
CIE-LCH	lch(37.18, 76.19, 307.36°)
OKLab	oklab(47.86% 0.0702 -0.1734)
OKLCH	oklch(47.86% 0.187 292)
XYZ	xyz(15.8914, 9.6341, 48.0263)
Luminance	0.0964 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.10

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643DBB #94BB3D

analogous

#3D55BB #643DBB #A33DBB

triadic

#643DBB #BB643D #3DBB64

tetradic

#643DBB #BB3D55 #94BB3D #3DBBA3

square

#643DBB #BB3D55 #94BB3D #3DBBA3

split-complementary

#643DBB #BBA33D #55BB3D

monochromatic

#331F5F #4B2E8D #643DBB #8768CE #AC96DD

Accessibility & contrast

On white

7.17

#643DBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.93

#643DBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643DBB

7.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643DBB	#FFFFFF	#000000	##FFFFFF
##643DBB	1.00	7.17	2.93	7.17
#FFFFFF	7.17	1.00	21.00	1.00
#000000	2.93	21.00	1.00	21.00
##FFFFFF	7.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059BF

Deuteranopia (green-blind)

#0055B8

Tritanopia (blue-blind)

#4A5C77

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #643dbb;
/* rgb */ color: rgb(100, 61, 187);
/* oklch */ color: oklch(47.9% 0.187 292.0);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#643dbb",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 187
  },
  "hsl": {
    "h": 258.571,
    "s": 50.806,
    "l": 48.627
  },
  "oklch": {
    "l": 0.47856,
    "c": 0.18704,
    "h": 292
  },
  "luminance": 0.09635
}

Semantic roles & 50–950 ramp

primary

#643DBB

secondary

#B5C88C

accent

#DA4EAF

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0814

muted

#7E7B82

Preview Lab

Preview with #643DBB

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

Preview Lab → · Contrast checker → · Palette generator →