#643AA6#643AA6

#643AA6 is a mid, vivid violet. Relative luminance 0.085; OKLCH L 45.8% C 0.166 H 297.3°. Best body text is #FFFFFF at 7.78:1 contrast (WCAG AA passes).

Color values

HEX	#643AA6
RGB	rgb(100, 58, 166)
HSL	hsl(263, 48%, 44%)
HSV	hsv(263, 65%, 65%)
CMYK	cmyk(39.8%, 65.1%, 0%, 34.9%)
CIE-LAB	lab(34.98, 42.10, -51.65)
CIE-LCH	lch(34.98, 66.64, 309.18°)
OKLab	oklab(45.77% 0.0759 -0.1472)
OKLCH	oklch(45.77% 0.166 297.3)
XYZ	xyz(13.6498, 8.4884, 36.9883)
Luminance	0.0849 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643AA6 #7CA63A

analogous

#3A46A6 #643AA6 #9A3AA6

triadic

#643AA6 #A6643A #3AA664

tetradic

#643AA6 #A63A46 #7CA63A #3AA69A

square

#643AA6 #A63A46 #7CA63A #3AA69A

split-complementary

#643AA6 #A69A3A #46A63A

monochromatic

#2D1A4B #492A79 #643AA6 #8358C5 #A486D5

Accessibility & contrast

On white

7.78

#643AA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#643AA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643AA6

7.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643AA6	#FFFFFF	#000000	##FFFFFF
##643AA6	1.00	7.78	2.70	7.78
#FFFFFF	7.78	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053A9

Deuteranopia (green-blind)

#0051A4

Tritanopia (blue-blind)

#54536B

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #643aa6;
/* rgb */ color: rgb(100, 58, 166);
/* oklch */ color: oklch(45.8% 0.166 297.3);

Tailwind

colors: {
  custom: {
    50: '#9573c1',
    500: '#643aa6',
    950: '#000000',
  },
}

SCSS

$custom: #643aa6;
$custom-light: #9573c1;
$custom-dark: #000000;

JSON

{
  "hex": "#643aa6",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 166
  },
  "hsl": {
    "h": 263.333,
    "s": 48.214,
    "l": 43.922
  },
  "oklch": {
    "l": 0.45771,
    "c": 0.16563,
    "h": 297.3
  },
  "luminance": 0.08489
}

Semantic roles & 50–950 ramp

primary

#643AA6

secondary

#A5BF7D

accent

#D850A3

background

#F9F7FC

surface

#F2EDF8

border

#CCC8D1

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643AA6

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

Preview Lab → · Contrast checker → · Palette generator →