#663FCD#663FCD

#663FCD is a mid, highly saturated violet. Relative luminance 0.108; OKLCH L 49.8% C 0.206 H 289.3°. Best body text is #FFFFFF at 6.65:1 contrast (WCAG AA passes).

Color values

HEX	#663FCD
RGB	rgb(102, 63, 205)
HSL	hsl(256, 59%, 53%)
HSV	hsv(256, 69%, 80%)
CMYK	cmyk(50.2%, 69.3%, 0%, 19.6%)
CIE-LAB	lab(39.22, 50.56, -67.72)
CIE-LCH	lch(39.22, 84.52, 306.75°)
OKLab	oklab(49.82% 0.0681 -0.1944)
OKLCH	oklch(49.82% 0.206 289.3)
XYZ	xyz(18.2733, 10.7868, 58.8650)
Luminance	0.1079 (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

#663FCD #A6CD3F

analogous

#3F5FCD #663FCD #AD3FCD

triadic

#663FCD #CD663F #3FCD66

tetradic

#663FCD #CD3F5F #A6CD3F #3FCDAD

square

#663FCD #CD3F5F #A6CD3F #3FCDAD

split-complementary

#663FCD #CDAD3F #5FCD3F

monochromatic

#361E74 #4C2BA4 #663FCD #8D70DA #B3A0E6

Accessibility & contrast

On white

6.65

#663FCD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.16

#663FCD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663FCD

6.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FCD	#FFFFFF	#000000	##FFFFFF
##663FCD	1.00	6.65	3.16	6.65
#FFFFFF	6.65	1.00	21.00	1.00
#000000	3.16	21.00	1.00	21.00
##FFFFFF	6.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FD1

Deuteranopia (green-blind)

#0059CA

Tritanopia (blue-blind)

#426381

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #663fcd;
/* rgb */ color: rgb(102, 63, 205);
/* oklch */ color: oklch(49.8% 0.206 289.3);

Tailwind

colors: {
  custom: {
    50: '#9b77dd',
    500: '#663fcd',
    950: '#000000',
  },
}

SCSS

$custom: #663fcd;
$custom-light: #9b77dd;
$custom-dark: #000000;

JSON

{
  "hex": "#663fcd",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 205
  },
  "hsl": {
    "h": 256.479,
    "s": 58.678,
    "l": 52.549
  },
  "oklch": {
    "l": 0.49817,
    "c": 0.20597,
    "h": 289.3
  },
  "luminance": 0.10788
}

Semantic roles & 50–950 ramp

primary

#663FCD

secondary

#C2D395

accent

#E246B7

background

#FAF7FD

surface

#F4EDFB

border

#CEC8D4

text

#0F0915

muted

#7F7B83

Preview Lab

Preview with #663FCD

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

Preview Lab → · Contrast checker → · Palette generator →