#643DD9#643DD9

#643DD9 is a mid, highly saturated violet. Relative luminance 0.111; OKLCH L 50.4% C 0.222 H 286.9°. Best body text is #FFFFFF at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#643DD9
RGB	rgb(100, 61, 217)
HSL	hsl(255, 67%, 55%)
HSV	hsv(255, 72%, 85%)
CMYK	cmyk(53.9%, 71.9%, 0%, 14.9%)
CIE-LAB	lab(39.67, 54.64, -73.90)
CIE-LCH	lch(39.67, 91.91, 306.48°)
OKLab	oklab(50.41% 0.0647 -0.2126)
OKLCH	oklch(50.41% 0.222 286.9)
XYZ	xyz(19.4449, 11.0555, 66.7415)
Luminance	0.1106 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#643DD9 #B2D93D

analogous

#3D64D9 #643DD9 #B23DD9

triadic

#643DD9 #D9643D #3DD964

tetradic

#643DD9 #D93D64 #B2D93D #3DD9B2

square

#643DD9 #D93D64 #B2D93D #3DD9B2

split-complementary

#643DD9 #D9B23D #64D93D

monochromatic

#341982 #4824B5 #643DD9 #8D70E3 #B6A3ED

Accessibility & contrast

On white

6.54

#643DD9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#643DD9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #643DD9

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##643DD9	#FFFFFF	#000000	##FFFFFF
##643DD9	1.00	6.54	3.21	6.54
#FFFFFF	6.54	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061DE

Deuteranopia (green-blind)

#0059D6

Tritanopia (blue-blind)

#326787

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #643dd9;
/* rgb */ color: rgb(100, 61, 217);
/* oklch */ color: oklch(50.4% 0.222 286.9);

Tailwind

colors: {
  custom: {
    50: '#9b76e6',
    500: '#643dd9',
    950: '#000000',
  },
}

SCSS

$custom: #643dd9;
$custom-light: #9b76e6;
$custom-dark: #000000;

JSON

{
  "hex": "#643dd9",
  "rgb": {
    "r": 100,
    "g": 61,
    "b": 217
  },
  "hsl": {
    "h": 255,
    "s": 67.241,
    "l": 54.51
  },
  "oklch": {
    "l": 0.50407,
    "c": 0.22218,
    "h": 286.9
  },
  "luminance": 0.11057
}

Semantic roles & 50–950 ramp

primary

#643DD9

secondary

#C9DA98

accent

#EA3EBF

background

#FAF7FE

surface

#F4EDFC

border

#CEC8D5

text

#0F0916

muted

#7F7B84

Preview Lab

Preview with #643DD9

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

Preview Lab → · Contrast checker → · Palette generator →