#643FB9#643FB9

#643FB9 is a mid, vivid violet. Relative luminance 0.098; OKLCH L 48.0% C 0.182 H 292.1°. Best body text is #FFFFFF at 7.11:1 contrast (WCAG AA passes).

Color values

HEX	#643FB9
RGB	rgb(100, 63, 185)
HSL	hsl(258, 49%, 49%)
HSV	hsv(258, 66%, 73%)
CMYK	cmyk(45.9%, 65.9%, 0%, 27.5%)
CIE-LAB	lab(37.42, 44.59, -58.99)
CIE-LCH	lch(37.42, 73.94, 307.09°)
OKLab	oklab(47.98% 0.0684 -0.1688)
OKLCH	oklch(47.98% 0.182 292.1)
XYZ	xyz(15.7876, 9.7666, 46.9428)
Luminance	0.0977 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.18

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643FB9 #94B93F

analogous

#3F57B9 #643FB9 #A13FB9

triadic

#643FB9 #B9643F #3FB964

tetradic

#643FB9 #B93F57 #94B93F #3FB9A1

square

#643FB9 #B93F57 #94B93F #3FB9A1

split-complementary

#643FB9 #B9A13F #57B93F

monochromatic

#33205E #4B2F8B #643FB9 #8769CC #AC97DC

Accessibility & contrast

On white

7.11

#643FB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#643FB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643FB9

7.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643FB9	#FFFFFF	#000000	##FFFFFF
##643FB9	1.00	7.11	2.95	7.11
#FFFFFF	7.11	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ABD

Deuteranopia (green-blind)

#0056B7

Tritanopia (blue-blind)

#4B5C76

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #643fb9;
/* rgb */ color: rgb(100, 63, 185);
/* oklch */ color: oklch(48.0% 0.182 292.1);

Tailwind

colors: {
  custom: {
    50: '#9776cf',
    500: '#643fb9',
    950: '#000000',
  },
}

SCSS

$custom: #643fb9;
$custom-light: #9776cf;
$custom-dark: #000000;

JSON

{
  "hex": "#643fb9",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 185
  },
  "hsl": {
    "h": 258.197,
    "s": 49.194,
    "l": 48.627
  },
  "oklch": {
    "l": 0.47982,
    "c": 0.18209,
    "h": 292.1
  },
  "luminance": 0.09767
}

Semantic roles & 50–950 ramp

primary

#643FB9

secondary

#B5C78D

accent

#D94FAF

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0914

muted

#7E7B82

Preview Lab

Preview with #643FB9

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

Preview Lab → · Contrast checker → · Palette generator →