#643DB9#643DB9

#643DB9 is a mid, vivid violet. Relative luminance 0.096; OKLCH L 47.7% C 0.185 H 292.4°. Best body text is #FFFFFF at 7.22:1 contrast (WCAG AA passes).

Color values

HEX	#643DB9
RGB	rgb(100, 61, 185)
HSL	hsl(259, 50%, 48%)
HSV	hsv(259, 67%, 73%)
CMYK	cmyk(45.9%, 67%, 0%, 27.5%)
CIE-LAB	lab(37.02, 45.68, -59.64)
CIE-LCH	lch(37.02, 75.12, 307.45°)
OKLab	oklab(47.69% 0.0704 -0.1707)
OKLCH	oklch(47.69% 0.185 292.4)
XYZ	xyz(15.6788, 9.5491, 46.9066)
Luminance	0.0955 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.36

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643DB9 #92B93D

analogous

#3D54B9 #643DB9 #A23DB9

triadic

#643DB9 #B9643D #3DB964

tetradic

#643DB9 #B93D54 #92B93D #3DB9A2

square

#643DB9 #B93D54 #92B93D #3DB9A2

split-complementary

#643DB9 #B9A23D #54B93D

monochromatic

#321F5D #4B2E8B #643DB9 #8766CD #AB95DC

Accessibility & contrast

On white

7.22

#643DB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#643DB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643DB9

7.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643DB9	#FFFFFF	#000000	##FFFFFF
##643DB9	1.00	7.22	2.91	7.22
#FFFFFF	7.22	1.00	21.00	1.00
#000000	2.91	21.00	1.00	21.00
##FFFFFF	7.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0059BD

Deuteranopia (green-blind)

#0055B6

Tritanopia (blue-blind)

#4B5B76

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #643db9;
/* rgb */ color: rgb(100, 61, 185);
/* oklch */ color: oklch(47.7% 0.185 292.4);

Tailwind

colors: {
  custom: {
    50: '#9775cf',
    500: '#643db9',
    950: '#000000',
  },
}

SCSS

$custom: #643db9;
$custom-light: #9775cf;
$custom-dark: #000000;

JSON

{
  "hex": "#643db9",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 185
  },
  "hsl": {
    "h": 258.871,
    "s": 50.407,
    "l": 48.235
  },
  "oklch": {
    "l": 0.47694,
    "c": 0.18464,
    "h": 292.4
  },
  "luminance": 0.0955
}

Semantic roles & 50–950 ramp

primary

#643DB9

secondary

#B4C78B

accent

#DA4EAE

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0814

muted

#7E7B82

Preview Lab

Preview with #643DB9

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

Preview Lab → · Contrast checker → · Palette generator →