#643CB3#643CB3

#643CB3 is a mid, vivid violet. Relative luminance 0.092; OKLCH L 47.1% C 0.179 H 293.9°. Best body text is #FFFFFF at 7.40:1 contrast (WCAG AA passes).

Color values

HEX	#643CB3
RGB	rgb(100, 60, 179)
HSL	hsl(260, 50%, 47%)
HSV	hsv(260, 66%, 70%)
CMYK	cmyk(44.1%, 66.5%, 0%, 29.8%)
CIE-LAB	lab(36.36, 44.56, -57.17)
CIE-LCH	lch(36.36, 72.48, 307.93°)
OKLab	oklab(47.07% 0.0723 -0.1634)
OKLCH	oklch(47.07% 0.179 293.9)
XYZ	xyz(15.0059, 9.1953, 43.6233)
Luminance	0.0920 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 3.29

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643CB3 #8BB33C

analogous

#3C50B3 #643CB3 #A03CB3

triadic

#643CB3 #B3643C #3CB364

tetradic

#643CB3 #B33C50 #8BB33C #3CB3A0

square

#643CB3 #B33C50 #8BB33C #3CB3A0

split-complementary

#643CB3 #B3A03C #50B33C

monochromatic

#311D57 #4A2D85 #643CB3 #8562CA #A990DA

Accessibility & contrast

On white

7.40

#643CB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#643CB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643CB3

7.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643CB3	#FFFFFF	#000000	##FFFFFF
##643CB3	1.00	7.40	2.84	7.40
#FFFFFF	7.40	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B7

Deuteranopia (green-blind)

#0053B1

Tritanopia (blue-blind)

#4E5872

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #643cb3;
/* rgb */ color: rgb(100, 60, 179);
/* oklch */ color: oklch(47.1% 0.179 293.9);

Tailwind

colors: {
  custom: {
    50: '#9674cb',
    500: '#643cb3',
    950: '#000000',
  },
}

SCSS

$custom: #643cb3;
$custom-light: #9674cb;
$custom-dark: #000000;

JSON

{
  "hex": "#643cb3",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 179
  },
  "hsl": {
    "h": 260.168,
    "s": 49.791,
    "l": 46.863
  },
  "oklch": {
    "l": 0.47072,
    "c": 0.17869,
    "h": 293.9
  },
  "luminance": 0.09196
}

Semantic roles & 50–950 ramp

primary

#643CB3

secondary

#B0C586

accent

#D94EAB

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643CB3

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

Preview Lab → · Contrast checker → · Palette generator →