#643F9C#643F9C

#643F9C is a mid, vivid violet. Relative luminance 0.087; OKLCH L 45.8% C 0.146 H 298.9°. Best body text is #FFFFFF at 7.68:1 contrast (WCAG AA passes).

Color values

HEX	#643F9C
RGB	rgb(100, 63, 156)
HSL	hsl(264, 42%, 43%)
HSV	hsv(264, 60%, 61%)
CMYK	cmyk(35.9%, 59.6%, 0%, 38.8%)
CIE-LAB	lab(35.33, 36.58, -45.07)
CIE-LCH	lch(35.33, 58.04, 309.06°)
OKLab	oklab(45.8% 0.0705 -0.1278)
OKLCH	oklch(45.8% 0.146 298.9)
XYZ	xyz(13.0323, 8.6645, 32.4319)
Luminance	0.0867 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643F9C #779C3F

analogous

#3F489C #643F9C #923F9C

triadic

#643F9C #9C643F #3F9C64

tetradic

#643F9C #9C3F48 #779C3F #3F9C92

square

#643F9C #9C3F48 #779C3F #3F9C92

split-complementary

#643F9C #9C923F #489C3F

monochromatic

#2C1C45 #482D70 #643F9C #825BBD #A387CE

Accessibility & contrast

On white

7.68

#643F9C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.73

#643F9C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #643F9C

7.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643F9C	#FFFFFF	#000000	##FFFFFF
##643F9C	1.00	7.68	2.73	7.68
#FFFFFF	7.68	1.00	21.00	1.00
#000000	2.73	21.00	1.00	21.00
##FFFFFF	7.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C539F

Deuteranopia (green-blind)

#1F529A

Tritanopia (blue-blind)

#585267

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #643f9c;
/* rgb */ color: rgb(100, 63, 156);
/* oklch */ color: oklch(45.8% 0.146 298.9);

Tailwind

colors: {
  custom: {
    50: '#9476ba',
    500: '#643f9c',
    950: '#000000',
  },
}

SCSS

$custom: #643f9c;
$custom-light: #9476ba;
$custom-dark: #000000;

JSON

{
  "hex": "#643f9c",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 156
  },
  "hsl": {
    "h": 263.871,
    "s": 42.466,
    "l": 42.941
  },
  "oklch": {
    "l": 0.45802,
    "c": 0.14598,
    "h": 298.9
  },
  "luminance": 0.08665
}

Semantic roles & 50–950 ramp

primary

#643F9C

secondary

#A1B97E

accent

#D256A1

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0812

muted

#7E7B81

Preview Lab

Preview with #643F9C

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

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