#643DB7#643DB7

#643DB7 is a mid, vivid violet. Relative luminance 0.095; OKLCH L 47.5% C 0.182 H 292.8°. Best body text is #FFFFFF at 7.26:1 contrast (WCAG AA passes).

Color values

HEX	#643DB7
RGB	rgb(100, 61, 183)
HSL	hsl(259, 50%, 48%)
HSV	hsv(259, 67%, 72%)
CMYK	cmyk(45.4%, 66.7%, 0%, 28.2%)
CIE-LAB	lab(36.87, 45.12, -58.71)
CIE-LCH	lch(36.87, 74.05, 307.55°)
OKLab	oklab(47.53% 0.0707 -0.1679)
OKLCH	oklch(47.53% 0.182 292.8)
XYZ	xyz(15.4692, 9.4652, 45.8025)
Luminance	0.0947 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.63

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643DB7 #90B73D

analogous

#3D53B7 #643DB7 #A13DB7

triadic

#643DB7 #B7643D #3DB764

tetradic

#643DB7 #B73D53 #90B73D #3DB7A1

square

#643DB7 #B73D53 #90B73D #3DB7A1

split-complementary

#643DB7 #B7A13D #53B73D

monochromatic

#321E5B #4B2E89 #643DB7 #8665CC #AA93DB

Accessibility & contrast

On white

7.26

#643DB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#643DB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643DB7

7.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643DB7	#FFFFFF	#000000	##FFFFFF
##643DB7	1.00	7.26	2.89	7.26
#FFFFFF	7.26	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058BB

Deuteranopia (green-blind)

#0054B5

Tritanopia (blue-blind)

#4C5A75

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #643db7;
/* rgb */ color: rgb(100, 61, 183);
/* oklch */ color: oklch(47.5% 0.182 292.8);

Tailwind

colors: {
  custom: {
    50: '#9775cd',
    500: '#643db7',
    950: '#000000',
  },
}

SCSS

$custom: #643db7;
$custom-light: #9775cd;
$custom-dark: #000000;

JSON

{
  "hex": "#643db7",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 183
  },
  "hsl": {
    "h": 259.18,
    "s": 50,
    "l": 47.843
  },
  "oklch": {
    "l": 0.47534,
    "c": 0.18222,
    "h": 292.8
  },
  "luminance": 0.09466
}

Semantic roles & 50–950 ramp

primary

#643DB7

secondary

#B3C689

accent

#DA4EAD

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0814

muted

#7E7B82

Preview Lab

Preview with #643DB7

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

Preview Lab → · Contrast checker → · Palette generator →