#643BB3#643BB3

#643BB3 is a mid, vivid violet. Relative luminance 0.091; OKLCH L 46.9% C 0.180 H 294.0°. Best body text is #FFFFFF at 7.45:1 contrast (WCAG AA passes).

Color values

HEX	#643BB3
RGB	rgb(100, 59, 179)
HSL	hsl(261, 50%, 47%)
HSV	hsv(261, 67%, 70%)
CMYK	cmyk(44.1%, 67%, 0%, 29.8%)
CIE-LAB	lab(36.16, 45.10, -57.49)
CIE-LCH	lch(36.16, 73.07, 308.11°)
OKLab	oklab(46.93% 0.0733 -0.1644)
OKLCH	oklch(46.93% 0.18 294)
XYZ	xyz(14.9540, 9.0915, 43.6060)
Luminance	0.0909 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 3.40

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643BB3 #8AB33B

analogous

#3B4EB3 #643BB3 #A03BB3

triadic

#643BB3 #B3643B #3BB364

tetradic

#643BB3 #B33B4E #8AB33B #3BB3A0

square

#643BB3 #B33B4E #8AB33B #3BB3A0

split-complementary

#643BB3 #B3A03B #4EB33B

monochromatic

#311D57 #4A2C85 #643BB3 #8560CB #A88EDA

Accessibility & contrast

On white

7.45

#643BB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#643BB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643BB3

7.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643BB3	#FFFFFF	#000000	##FFFFFF
##643BB3	1.00	7.45	2.82	7.45
#FFFFFF	7.45	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B7

Deuteranopia (green-blind)

#0053B1

Tritanopia (blue-blind)

#4E5872

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #643bb3;
/* rgb */ color: rgb(100, 59, 179);
/* oklch */ color: oklch(46.9% 0.180 294.0);

Tailwind

colors: {
  custom: {
    50: '#9774cb',
    500: '#643bb3',
    950: '#000000',
  },
}

SCSS

$custom: #643bb3;
$custom-light: #9774cb;
$custom-dark: #000000;

JSON

{
  "hex": "#643bb3",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 179
  },
  "hsl": {
    "h": 260.5,
    "s": 50.42,
    "l": 46.667
  },
  "oklch": {
    "l": 0.4693,
    "c": 0.17999,
    "h": 294
  },
  "luminance": 0.09092
}

Semantic roles & 50–950 ramp

primary

#643BB3

secondary

#AFC585

accent

#DA4EAA

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643BB3

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

Preview Lab → · Contrast checker → · Palette generator →