#643DB6#643DB6

#643DB6 is a mid, vivid violet. Relative luminance 0.094; OKLCH L 47.5% C 0.181 H 293.0°. Best body text is #FFFFFF at 7.28:1 contrast (WCAG AA passes).

Color values

HEX	#643DB6
RGB	rgb(100, 61, 182)
HSL	hsl(259, 50%, 48%)
HSV	hsv(259, 66%, 71%)
CMYK	cmyk(45.1%, 66.5%, 0%, 28.6%)
CIE-LAB	lab(36.79, 44.85, -58.24)
CIE-LCH	lch(36.79, 73.51, 307.59°)
OKLab	oklab(47.45% 0.0708 -0.1666)
OKLCH	oklch(47.45% 0.181 293)
XYZ	xyz(15.3655, 9.4237, 45.2563)
Luminance	0.0942 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.77

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643DB6 #8FB63D

analogous

#3D52B6 #643DB6 #A03DB6

triadic

#643DB6 #B6643D #3DB664

tetradic

#643DB6 #B63D52 #8FB63D #3DB6A0

square

#643DB6 #B63D52 #8FB63D #3DB6A0

split-complementary

#643DB6 #B6A03D #52B63D

monochromatic

#321E5A #4B2E88 #643DB6 #8665CB #AA93DB

Accessibility & contrast

On white

7.28

#643DB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.88

#643DB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643DB6

7.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643DB6	#FFFFFF	#000000	##FFFFFF
##643DB6	1.00	7.28	2.88	7.28
#FFFFFF	7.28	1.00	21.00	1.00
#000000	2.88	21.00	1.00	21.00
##FFFFFF	7.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058BA

Deuteranopia (green-blind)

#0054B4

Tritanopia (blue-blind)

#4C5A74

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #643db6;
/* rgb */ color: rgb(100, 61, 182);
/* oklch */ color: oklch(47.5% 0.181 293.0);

Tailwind

colors: {
  custom: {
    50: '#9775cd',
    500: '#643db6',
    950: '#000000',
  },
}

SCSS

$custom: #643db6;
$custom-light: #9775cd;
$custom-dark: #000000;

JSON

{
  "hex": "#643db6",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 182
  },
  "hsl": {
    "h": 259.339,
    "s": 49.794,
    "l": 47.647
  },
  "oklch": {
    "l": 0.47454,
    "c": 0.18102,
    "h": 293
  },
  "luminance": 0.09424
}

Semantic roles & 50–950 ramp

primary

#643DB6

secondary

#B2C689

accent

#D94EAD

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643DB6

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

Preview Lab → · Contrast checker → · Palette generator →