#643FCB#643FCB

#643FCB is a mid, highly saturated violet. Relative luminance 0.106; OKLCH L 49.5% C 0.204 H 288.8°. Best body text is #FFFFFF at 6.74:1 contrast (WCAG AA passes).

Color values

HEX	#643FCB
RGB	rgb(100, 63, 203)
HSL	hsl(256, 57%, 52%)
HSV	hsv(256, 69%, 80%)
CMYK	cmyk(50.7%, 69%, 0%, 20.4%)
CIE-LAB	lab(38.86, 49.67, -67.17)
CIE-LCH	lch(38.86, 83.53, 306.48°)
OKLab	oklab(49.46% 0.0657 -0.1928)
OKLCH	oklch(49.46% 0.204 288.8)
XYZ	xyz(17.8094, 10.5753, 57.5912)
Luminance	0.1058 (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

#643FCB #A6CB3F

analogous

#3F60CB #643FCB #AA3FCB

triadic

#643FCB #CB643F #3FCB64

tetradic

#643FCB #CB3F60 #A6CB3F #3FCBAA

square

#643FCB #CB3F60 #A6CB3F #3FCBAA

split-complementary

#643FCB #CBAA3F #60CB3F

monochromatic

#341F71 #4B2CA1 #643FCB #8B6FD8 #B29FE5

Accessibility & contrast

On white

6.74

#643FCB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#643FCB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #643FCB

6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643FCB	#FFFFFF	#000000	##FFFFFF
##643FCB	1.00	6.74	3.12	6.74
#FFFFFF	6.74	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ECF

Deuteranopia (green-blind)

#0058C8

Tritanopia (blue-blind)

#3F6380

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #643fcb;
/* rgb */ color: rgb(100, 63, 203);
/* oklch */ color: oklch(49.5% 0.204 288.8);

Tailwind

colors: {
  custom: {
    50: '#9977dc',
    500: '#643fcb',
    950: '#000000',
  },
}

SCSS

$custom: #643fcb;
$custom-light: #9977dc;
$custom-dark: #000000;

JSON

{
  "hex": "#643fcb",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 203
  },
  "hsl": {
    "h": 255.857,
    "s": 57.377,
    "l": 52.157
  },
  "oklch": {
    "l": 0.49459,
    "c": 0.20368,
    "h": 288.8
  },
  "luminance": 0.10576
}

Semantic roles & 50–950 ramp

primary

#643FCB

secondary

#C1D194

accent

#E147B8

background

#FAF7FD

surface

#F3EDFB

border

#CDC8D4

text

#0F0915

muted

#7F7B83

Preview Lab

Preview with #643FCB

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

Preview Lab → · Contrast checker → · Palette generator →