#643EB6#643EB6

#643EB6 is a mid, vivid violet. Relative luminance 0.095; OKLCH L 47.6% C 0.180 H 292.8°. Best body text is #FFFFFF at 7.23:1 contrast (WCAG AA passes).

Color values

HEX	#643EB6
RGB	rgb(100, 62, 182)
HSL	hsl(259, 49%, 48%)
HSV	hsv(259, 66%, 71%)
CMYK	cmyk(45.1%, 65.9%, 0%, 28.6%)
CIE-LAB	lab(36.99, 44.30, -57.92)
CIE-LCH	lch(36.99, 72.92, 307.41°)
OKLab	oklab(47.6% 0.0698 -0.1656)
OKLCH	oklch(47.6% 0.18 292.8)
XYZ	xyz(15.4193, 9.5315, 45.2742)
Luminance	0.0953 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 2.69

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643EB6 #90B63E

analogous

#3E54B6 #643EB6 #A03EB6

triadic

#643EB6 #B6643E #3EB664

tetradic

#643EB6 #B63E54 #90B63E #3EB6A0

square

#643EB6 #B63E54 #90B63E #3EB6A0

split-complementary

#643EB6 #B6A03E #54B63E

monochromatic

#321F5B #4B2E88 #643EB6 #8666CB #AA94DB

Accessibility & contrast

On white

7.23

#643EB6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.91

#643EB6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643EB6

7.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643EB6	#FFFFFF	#000000	##FFFFFF
##643EB6	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)

#0059BA

Deuteranopia (green-blind)

#0055B4

Tritanopia (blue-blind)

#4C5B74

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #643eb6;
/* rgb */ color: rgb(100, 62, 182);
/* oklch */ color: oklch(47.6% 0.180 292.8);

Tailwind

colors: {
  custom: {
    50: '#9776cd',
    500: '#643eb6',
    950: '#000000',
  },
}

SCSS

$custom: #643eb6;
$custom-light: #9776cd;
$custom-dark: #000000;

JSON

{
  "hex": "#643eb6",
  "rgb": {
    "r": 100,
    "g": 62,
    "b": 182
  },
  "hsl": {
    "h": 259,
    "s": 49.18,
    "l": 47.843
  },
  "oklch": {
    "l": 0.47598,
    "c": 0.17973,
    "h": 292.8
  },
  "luminance": 0.09532
}

Semantic roles & 50–950 ramp

primary

#643EB6

secondary

#B3C68A

accent

#D94FAD

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0813

muted

#7E7B82

Preview Lab

Preview with #643EB6

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

Preview Lab → · Contrast checker → · Palette generator →