#643F99#643F99

#643F99 is a mid, vivid violet. Relative luminance 0.086; OKLCH L 45.6% C 0.142 H 299.7°. Best body text is #FFFFFF at 7.74:1 contrast (WCAG AA passes).

Color values

HEX	#643F99
RGB	rgb(100, 63, 153)
HSL	hsl(265, 42%, 42%)
HSV	hsv(265, 59%, 60%)
CMYK	cmyk(34.6%, 58.8%, 0%, 40%)
CIE-LAB	lab(35.13, 35.77, -43.57)
CIE-LCH	lch(35.13, 56.37, 309.38°)
OKLab	oklab(45.59% 0.0705 -0.1234)
OKLCH	oklch(45.59% 0.142 299.7)
XYZ	xyz(12.7814, 8.5641, 31.1105)
Luminance	0.0856 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F99 #74993F

analogous

#3F4799 #643F99 #913F99

triadic

#643F99 #99643F #3F9964

tetradic

#643F99 #993F47 #74993F #3F9991

square

#643F99 #993F47 #74993F #3F9991

split-complementary

#643F99 #99913F #47993F

monochromatic

#2B1B42 #482D6E #643F99 #825ABB #A385CD

Accessibility & contrast

On white

7.74

#643F99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.71

#643F99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F99

7.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F99	#FFFFFF	#000000	##FFFFFF
##643F99	1.00	7.74	2.71	7.74
#FFFFFF	7.74	1.00	21.00	1.00
#000000	2.71	21.00	1.00	21.00
##FFFFFF	7.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#13529C

Deuteranopia (green-blind)

#235297

Tritanopia (blue-blind)

#595166

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #643f99;
/* rgb */ color: rgb(100, 63, 153);
/* oklch */ color: oklch(45.6% 0.142 299.7);

Tailwind

colors: {
  custom: {
    50: '#9476b8',
    500: '#643f99',
    950: '#000000',
  },
}

SCSS

$custom: #643f99;
$custom-light: #9476b8;
$custom-dark: #000000;

JSON

{
  "hex": "#643f99",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 153
  },
  "hsl": {
    "h": 264.667,
    "s": 41.667,
    "l": 42.353
  },
  "oklch": {
    "l": 0.45593,
    "c": 0.14215,
    "h": 299.7
  },
  "luminance": 0.08564
}

Semantic roles & 50–950 ramp

primary

#643F99

secondary

#9FB77C

accent

#D1569F

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #643F99

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

Preview Lab → · Contrast checker → · Palette generator →