#643CBB#643CBB

#643CBB is a mid, vivid violet. Relative luminance 0.095; OKLCH L 47.7% C 0.188 H 292.2°. Best body text is #FFFFFF at 7.23:1 contrast (WCAG AA passes).

Color values

HEX	#643CBB
RGB	rgb(100, 60, 187)
HSL	hsl(259, 51%, 48%)
HSV	hsv(259, 68%, 73%)
CMYK	cmyk(46.5%, 67.9%, 0%, 26.7%)
CIE-LAB	lab(36.98, 46.77, -60.88)
CIE-LCH	lch(36.98, 76.77, 307.54°)
OKLab	oklab(47.72% 0.0712 -0.1743)
OKLCH	oklch(47.72% 0.188 292.2)
XYZ	xyz(15.8385, 9.5284, 48.0087)
Luminance	0.0953 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.23

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643CBB #93BB3C

analogous

#3C53BB #643CBB #A33CBB

triadic

#643CBB #BB643C #3CBB64

tetradic

#643CBB #BB3C53 #93BB3C #3CBBA3

square

#643CBB #BB3C53 #93BB3C #3CBBA3

split-complementary

#643CBB #BBA33C #53BB3C

monochromatic

#321E5E #4B2D8D #643CBB #8766CE #AB95DD

Accessibility & contrast

On white

7.23

#643CBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#643CBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643CBB

7.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643CBB	#FFFFFF	#000000	##FFFFFF
##643CBB	1.00	7.23	2.91	7.23
#FFFFFF	7.23	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059BF

Deuteranopia (green-blind)

#0054B8

Tritanopia (blue-blind)

#4A5B77

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #643cbb;
/* rgb */ color: rgb(100, 60, 187);
/* oklch */ color: oklch(47.7% 0.188 292.2);

Tailwind

colors: {
  custom: {
    50: '#9774d0',
    500: '#643cbb',
    950: '#000000',
  },
}

SCSS

$custom: #643cbb;
$custom-light: #9774d0;
$custom-dark: #000000;

JSON

{
  "hex": "#643cbb",
  "rgb": {
    "r": 100,
    "g": 60,
    "b": 187
  },
  "hsl": {
    "h": 258.898,
    "s": 51.417,
    "l": 48.431
  },
  "oklch": {
    "l": 0.47716,
    "c": 0.18828,
    "h": 292.2
  },
  "luminance": 0.09529
}

Semantic roles & 50–950 ramp

primary

#643CBB

secondary

#B5C88B

accent

#DB4DAE

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0814

muted

#7E7B82

Preview Lab

Preview with #643CBB

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

Preview Lab → · Contrast checker → · Palette generator →