#643BC9#643BC9

#643BC9 is a mid, highly saturated violet. Relative luminance 0.101; OKLCH L 48.8% C 0.206 H 289.8°. Best body text is #FFFFFF at 6.97:1 contrast (WCAG AA passes).

Color values

HEX	#643BC9
RGB	rgb(100, 59, 201)
HSL	hsl(257, 57%, 51%)
HSV	hsv(257, 71%, 79%)
CMYK	cmyk(50.2%, 70.6%, 0%, 21.2%)
CIE-LAB	lab(37.94, 51.19, -67.50)
CIE-LCH	lch(37.94, 84.72, 307.17°)
OKLab	oklab(48.75% 0.0696 -0.1938)
OKLCH	oklch(48.75% 0.206 289.8)
XYZ	xyz(17.3591, 10.0536, 56.2729)
Luminance	0.1005 (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

#643BC9 #A0C93B

analogous

#3B59C9 #643BC9 #AB3BC9

triadic

#643BC9 #C9643B #3BC964

tetradic

#643BC9 #C93B59 #A0C93B #3BC9AB

square

#643BC9 #C93B59 #A0C93B #3BC9AB

split-complementary

#643BC9 #C9AB3B #59C93B

monochromatic

#341E6C #4C2B9C #643BC9 #8A6BD6 #B09BE3

Accessibility & contrast

On white

6.97

#643BC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.01

#643BC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #643BC9

6.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643BC9	#FFFFFF	#000000	##FFFFFF
##643BC9	1.00	6.97	3.01	6.97
#FFFFFF	6.97	1.00	21.00	1.00
#000000	3.01	21.00	1.00	21.00
##FFFFFF	6.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CCD

Deuteranopia (green-blind)

#0056C6

Tritanopia (blue-blind)

#41607E

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #643bc9;
/* rgb */ color: rgb(100, 59, 201);
/* oklch */ color: oklch(48.8% 0.206 289.8);

Tailwind

colors: {
  custom: {
    50: '#9974da',
    500: '#643bc9',
    950: '#000000',
  },
}

SCSS

$custom: #643bc9;
$custom-light: #9974da;
$custom-dark: #000000;

JSON

{
  "hex": "#643bc9",
  "rgb": {
    "r": 100,
    "g": 59,
    "b": 201
  },
  "hsl": {
    "h": 257.324,
    "s": 56.8,
    "l": 50.98
  },
  "oklch": {
    "l": 0.48754,
    "c": 0.20591,
    "h": 289.8
  },
  "luminance": 0.10054
}

Semantic roles & 50–950 ramp

primary

#643BC9

secondary

#BDCF90

accent

#E048B4

background

#FAF7FD

surface

#F3EDFB

border

#CDC8D4

text

#0F0815

muted

#7F7B83

Preview Lab

Preview with #643BC9

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

Preview Lab → · Contrast checker → · Palette generator →