#663CD9#663CD9

#663CD9 is a mid, highly saturated violet. Relative luminance 0.111; OKLCH L 50.5% C 0.223 H 287.8°. Best body text is #FFFFFF at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#663CD9
RGB	rgb(102, 60, 217)
HSL	hsl(256, 67%, 54%)
HSV	hsv(256, 72%, 85%)
CMYK	cmyk(53%, 72.4%, 0%, 14.9%)
CIE-LAB	lab(39.69, 55.44, -73.87)
CIE-LCH	lch(39.69, 92.36, 306.89°)
OKLab	oklab(50.47% 0.0683 -0.2124)
OKLCH	oklch(50.47% 0.223 287.8)
XYZ	xyz(19.6160, 11.0653, 66.7344)
Luminance	0.1107 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663CD9 #AFD93C

analogous

#3C61D9 #663CD9 #B53CD9

triadic

#663CD9 #D9663C #3CD966

tetradic

#663CD9 #D93C61 #AFD93C #3CD9B5

square

#663CD9 #D93C61 #AFD93C #3CD9B5

split-complementary

#663CD9 #D9B53C #61D93C

monochromatic

#351981 #4A23B5 #663CD9 #8E6FE3 #B6A2ED

Accessibility & contrast

On white

6.54

#663CD9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#663CD9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663CD9

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663CD9	#FFFFFF	#000000	##FFFFFF
##663CD9	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)

#386687

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #663cd9;
/* rgb */ color: rgb(102, 60, 217);
/* oklch */ color: oklch(50.5% 0.223 287.8);

Tailwind

colors: {
  custom: {
    50: '#9d76e6',
    500: '#663cd9',
    950: '#000000',
  },
}

SCSS

$custom: #663cd9;
$custom-light: #9d76e6;
$custom-dark: #000000;

JSON

{
  "hex": "#663cd9",
  "rgb": {
    "r": 102,
    "g": 60,
    "b": 217
  },
  "hsl": {
    "h": 256.051,
    "s": 67.382,
    "l": 54.314
  },
  "oklch": {
    "l": 0.50465,
    "c": 0.2231,
    "h": 287.8
  },
  "luminance": 0.11066
}

Semantic roles & 50–950 ramp

primary

#663CD9

secondary

#C8DA97

accent

#EA3EBC

background

#FAF7FE

surface

#F4EDFC

border

#CEC8D5

text

#0F0916

muted

#7F7B84

Preview Lab

Preview with #663CD9

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

Preview Lab → · Contrast checker → · Palette generator →