#643CB0#643CB0

#643CB0 is a mid, vivid violet. Relative luminance 0.091; OKLCH L 46.8% C 0.175 H 294.5°. Best body text is #FFFFFF at 7.46:1 contrast (WCAG AA passes).

Color values

HEX	#643CB0
RGB	rgb(100, 60, 176)
HSL	hsl(261, 49%, 46%)
HSV	hsv(261, 66%, 69%)
CMYK	cmyk(43.2%, 65.9%, 0%, 31%)
CIE-LAB	lab(36.13, 43.73, -55.76)
CIE-LCH	lch(36.13, 70.86, 308.11°)
OKLab	oklab(46.84% 0.0726 -0.1593)
OKLCH	oklch(46.84% 0.175 294.5)
XYZ	xyz(14.7058, 9.0753, 42.0428)
Luminance	0.0908 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643CB0 #88B03C

analogous

#3C4EB0 #643CB0 #9E3CB0

triadic

#643CB0 #B0643C #3CB064

tetradic

#643CB0 #B03C4E #88B03C #3CB09E

square

#643CB0 #B03C4E #88B03C #3CB09E

split-complementary

#643CB0 #B09E3C #4EB03C

monochromatic

#301D55 #4A2C82 #643CB0 #8460C9 #A88ED8

Accessibility & contrast

On white

7.46

#643CB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#643CB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643CB0

7.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643CB0	#FFFFFF	#000000	##FFFFFF
##643CB0	1.00	7.46	2.82	7.46
#FFFFFF	7.46	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B4

Deuteranopia (green-blind)

#0053AE

Tritanopia (blue-blind)

#4F5771

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #643cb0;
/* rgb */ color: rgb(100, 60, 176);
/* oklch */ color: oklch(46.8% 0.175 294.5);

Tailwind

colors: {
  custom: {
    50: '#9674c8',
    500: '#643cb0',
    950: '#000000',
  },
}

SCSS

$custom: #643cb0;
$custom-light: #9674c8;
$custom-dark: #000000;

JSON

{
  "hex": "#643cb0",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 176
  },
  "hsl": {
    "h": 260.69,
    "s": 49.153,
    "l": 46.275
  },
  "oklch": {
    "l": 0.46835,
    "c": 0.17506,
    "h": 294.5
  },
  "luminance": 0.09076
}

Semantic roles & 50–950 ramp

primary

#643CB0

secondary

#AEC385

accent

#D94FA9

background

#F9F7FC

surface

#F2EDF8

border

#CCC8D1

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643CB0

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

Preview Lab → · Contrast checker → · Palette generator →