#643FC9#643FC9

#643FC9 is a mid, highly saturated violet. Relative luminance 0.105; OKLCH L 49.3% C 0.201 H 289.1°. Best body text is #FFFFFF at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#643FC9
RGB	rgb(100, 63, 201)
HSL	hsl(256, 56%, 52%)
HSV	hsv(256, 69%, 79%)
CMYK	cmyk(50.2%, 68.7%, 0%, 21.2%)
CIE-LAB	lab(38.69, 49.10, -66.27)
CIE-LCH	lch(38.69, 82.48, 306.54°)
OKLab	oklab(49.29% 0.066 -0.1902)
OKLCH	oklch(49.29% 0.201 289.1)
XYZ	xyz(17.5726, 10.4806, 56.3441)
Luminance	0.1048 (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

#643FC9 #A4C93F

analogous

#3F5FC9 #643FC9 #A93FC9

triadic

#643FC9 #C9643F #3FC964

tetradic

#643FC9 #C93F5F #A4C93F #3FC9A9

square

#643FC9 #C93F5F #A4C93F #3FC9A9

split-complementary

#643FC9 #C9A93F #5FC93F

monochromatic

#341F6F #4B2D9E #643FC9 #8B6FD6 #B19FE4

Accessibility & contrast

On white

6.78

#643FC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#643FC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #643FC9

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643FC9	#FFFFFF	#000000	##FFFFFF
##643FC9	1.00	6.78	3.10	6.78
#FFFFFF	6.78	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ECD

Deuteranopia (green-blind)

#0058C6

Tritanopia (blue-blind)

#40627F

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #643fc9;
/* rgb */ color: rgb(100, 63, 201);
/* oklch */ color: oklch(49.3% 0.201 289.1);

Tailwind

colors: {
  custom: {
    50: '#9977da',
    500: '#643fc9',
    950: '#000000',
  },
}

SCSS

$custom: #643fc9;
$custom-light: #9977da;
$custom-dark: #000000;

JSON

{
  "hex": "#643fc9",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 201
  },
  "hsl": {
    "h": 256.087,
    "s": 56.098,
    "l": 51.765
  },
  "oklch": {
    "l": 0.49291,
    "c": 0.20132,
    "h": 289.1
  },
  "luminance": 0.10481
}

Semantic roles & 50–950 ramp

primary

#643FC9

secondary

#C0D094

accent

#DF48B7

background

#FAF7FD

surface

#F3EDFB

border

#CDC8D4

text

#0F0915

muted

#7F7B83

Preview Lab

Preview with #643FC9

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

Preview Lab → · Contrast checker → · Palette generator →