#643FD8#643FD8

#643FD8 is a mid, highly saturated violet. Relative luminance 0.112; OKLCH L 50.6% C 0.219 H 286.8°. Best body text is #FFFFFF at 6.47:1 contrast (WCAG AA passes).

Color values

HEX	#643FD8
RGB	rgb(100, 63, 216)
HSL	hsl(255, 66%, 55%)
HSV	hsv(255, 71%, 85%)
CMYK	cmyk(53.7%, 70.8%, 0%, 15.3%)
CIE-LAB	lab(39.95, 53.35, -72.88)
CIE-LCH	lch(39.95, 90.31, 306.20°)
OKLab	oklab(50.58% 0.0633 -0.2095)
OKLCH	oklch(50.58% 0.219 286.8)
XYZ	xyz(19.4240, 11.2212, 66.0948)
Luminance	0.1122 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643FD8 #B3D83F

analogous

#3F66D8 #643FD8 #B13FD8

triadic

#643FD8 #D8643F #3FD864

tetradic

#643FD8 #D83F66 #B3D83F #3FD8B1

square

#643FD8 #D83F66 #B3D83F #3FD8B1

split-complementary

#643FD8 #D8B13F #66D83F

monochromatic

#341A82 #4825B5 #643FD8 #8D72E2 #B6A5ED

Accessibility & contrast

On white

6.47

#643FD8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#643FD8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #643FD8

6.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643FD8	#FFFFFF	#000000	##FFFFFF
##643FD8	1.00	6.47	3.24	6.47
#FFFFFF	6.47	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062DD

Deuteranopia (green-blind)

#005AD5

Tritanopia (blue-blind)

#336887

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #643fd8;
/* rgb */ color: rgb(100, 63, 216);
/* oklch */ color: oklch(50.6% 0.219 286.8);

Tailwind

colors: {
  custom: {
    50: '#9b77e5',
    500: '#643fd8',
    950: '#000000',
  },
}

SCSS

$custom: #643fd8;
$custom-light: #9b77e5;
$custom-dark: #000000;

JSON

{
  "hex": "#643fd8",
  "rgb": {
    "r": 100,
    "g": 63,
    "b": 216
  },
  "hsl": {
    "h": 254.51,
    "s": 66.234,
    "l": 54.706
  },
  "oklch": {
    "l": 0.50577,
    "c": 0.21889,
    "h": 286.8
  },
  "luminance": 0.11222
}

Semantic roles & 50–950 ramp

primary

#643FD8

secondary

#CADA99

accent

#E93FC0

background

#FAF7FE

surface

#F4EDFC

border

#CEC8D5

text

#0F0916

muted

#7F7B84

Preview Lab

Preview with #643FD8

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

Preview Lab → · Contrast checker → · Palette generator →