#643AA5#643AA5

#643AA5 is a mid, vivid violet. Relative luminance 0.085; OKLCH L 45.7% C 0.164 H 297.5°. Best body text is #FFFFFF at 7.81:1 contrast (WCAG AA passes).

Color values

HEX	#643AA5
RGB	rgb(100, 58, 165)
HSL	hsl(264, 48%, 44%)
HSV	hsv(264, 65%, 65%)
CMYK	cmyk(39.4%, 64.8%, 0%, 35.3%)
CIE-LAB	lab(34.91, 41.83, -51.17)
CIE-LCH	lch(34.91, 66.09, 309.26°)
OKLab	oklab(45.7% 0.076 -0.1458)
OKLCH	oklch(45.7% 0.164 297.5)
XYZ	xyz(13.5584, 8.4518, 36.5070)
Luminance	0.0845 (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

#643AA5 #7BA53A

analogous

#3A45A5 #643AA5 #993AA5

triadic

#643AA5 #A5643A #3AA564

tetradic

#643AA5 #A53A45 #7BA53A #3AA599

square

#643AA5 #A53A45 #7BA53A #3AA599

split-complementary

#643AA5 #A5993A #45A53A

monochromatic

#2D1A4A #492A78 #643AA5 #8258C4 #A485D4

Accessibility & contrast

On white

7.81

#643AA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.69

#643AA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643AA5

7.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643AA5	#FFFFFF	#000000	##FFFFFF
##643AA5	1.00	7.81	2.69	7.81
#FFFFFF	7.81	1.00	21.00	1.00
#000000	2.69	21.00	1.00	21.00
##FFFFFF	7.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052A8

Deuteranopia (green-blind)

#0051A3

Tritanopia (blue-blind)

#54526A

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #643aa5;
/* rgb */ color: rgb(100, 58, 165);
/* oklch */ color: oklch(45.7% 0.164 297.5);

Tailwind

colors: {
  custom: {
    50: '#9573c0',
    500: '#643aa5',
    950: '#000000',
  },
}

SCSS

$custom: #643aa5;
$custom-light: #9573c0;
$custom-dark: #000000;

JSON

{
  "hex": "#643aa5",
  "rgb": {
    "r": 100,
    "g": 58,
    "b": 165
  },
  "hsl": {
    "h": 263.551,
    "s": 47.982,
    "l": 43.725
  },
  "oklch": {
    "l": 0.45695,
    "c": 0.16443,
    "h": 297.5
  },
  "luminance": 0.08452
}

Semantic roles & 50–950 ramp

primary

#643AA5

secondary

#A4BE7D

accent

#D850A2

background

#F9F7FB

surface

#F2EDF7

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643AA5

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

Preview Lab → · Contrast checker → · Palette generator →