#643D9E#643D9E

#643D9E is a mid, vivid violet. Relative luminance 0.085; OKLCH L 45.6% C 0.151 H 298.8°. Best body text is #FFFFFF at 7.77:1 contrast (WCAG AA passes).

Color values

HEX	#643D9E
RGB	rgb(100, 61, 158)
HSL	hsl(264, 44%, 43%)
HSV	hsv(264, 61%, 62%)
CMYK	cmyk(36.7%, 61.4%, 0%, 38%)
CIE-LAB	lab(35.03, 38.26, -46.75)
CIE-LCH	lch(35.03, 60.41, 309.30°)
OKLab	oklab(45.63% 0.0729 -0.1328)
OKLCH	oklch(45.63% 0.152 298.8)
XYZ	xyz(13.0943, 8.5153, 33.2949)
Luminance	0.0852 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643D9E #779E3D

analogous

#3D469E #643D9E #943D9E

triadic

#643D9E #9E643D #3D9E64

tetradic

#643D9E #9E3D46 #779E3D #3D9E94

square

#643D9E #9E3D46 #779E3D #3D9E94

split-complementary

#643D9E #9E943D #469E3D

monochromatic

#2C1B46 #482C72 #643D9E #8259BF #A385D0

Accessibility & contrast

On white

7.77

#643D9E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#643D9E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643D9E

7.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643D9E	#FFFFFF	#000000	##FFFFFF
##643D9E	1.00	7.77	2.70	7.77
#FFFFFF	7.77	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052A1

Deuteranopia (green-blind)

#18519C

Tritanopia (blue-blind)

#575267

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #643d9e;
/* rgb */ color: rgb(100, 61, 158);
/* oklch */ color: oklch(45.6% 0.151 298.8);

Tailwind

colors: {
  custom: {
    50: '#9474bb',
    500: '#643d9e',
    950: '#000000',
  },
}

SCSS

$custom: #643d9e;
$custom-light: #9474bb;
$custom-dark: #000000;

JSON

{
  "hex": "#643d9e",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 158
  },
  "hsl": {
    "h": 264.124,
    "s": 44.292,
    "l": 42.941
  },
  "oklch": {
    "l": 0.45629,
    "c": 0.1515,
    "h": 298.8
  },
  "luminance": 0.08515
}

Semantic roles & 50–950 ramp

primary

#643D9E

secondary

#A1BA7D

accent

#D454A0

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #643D9E

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

Preview Lab → · Contrast checker → · Palette generator →