#663FA6#663FA6

#663FA6 is a mid, vivid violet. Relative luminance 0.091; OKLCH L 46.7% C 0.159 H 297.3°. Best body text is #FFFFFF at 7.43:1 contrast (WCAG AA passes).

Color values

HEX	#663FA6
RGB	rgb(102, 63, 166)
HSL	hsl(263, 45%, 45%)
HSV	hsv(263, 62%, 65%)
CMYK	cmyk(38.6%, 62%, 0%, 34.9%)
CIE-LAB	lab(36.24, 39.76, -49.61)
CIE-LCH	lch(36.24, 63.57, 308.71°)
OKLab	oklab(46.74% 0.0729 -0.1411)
OKLCH	oklch(46.74% 0.159 297.3)
XYZ	xyz(14.1382, 9.1327, 37.0869)
Luminance	0.0913 (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

#663FA6 #7FA63F

analogous

#3F4CA6 #663FA6 #993FA6

triadic

#663FA6 #A6663F #3FA666

tetradic

#663FA6 #A63F4C #7FA63F #3FA699

square

#663FA6 #A63F4C #7FA63F #3FA699

split-complementary

#663FA6 #A6993F #4CA63F

monochromatic

#2F1D4D #4B2E7A #663FA6 #8560C3 #A78CD3

Accessibility & contrast

On white

7.43

#663FA6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.83

#663FA6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663FA6

7.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FA6	#FFFFFF	#000000	##FFFFFF
##663FA6	1.00	7.43	2.83	7.43
#FFFFFF	7.43	1.00	21.00	1.00
#000000	2.83	21.00	1.00	21.00
##FFFFFF	7.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056A9

Deuteranopia (green-blind)

#0F54A4

Tritanopia (blue-blind)

#57566C

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #663fa6;
/* rgb */ color: rgb(102, 63, 166);
/* oklch */ color: oklch(46.7% 0.159 297.3);

Tailwind

colors: {
  custom: {
    50: '#9676c1',
    500: '#663fa6',
    950: '#000000',
  },
}

SCSS

$custom: #663fa6;
$custom-light: #9676c1;
$custom-dark: #000000;

JSON

{
  "hex": "#663fa6",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 166
  },
  "hsl": {
    "h": 262.718,
    "s": 44.978,
    "l": 44.902
  },
  "oklch": {
    "l": 0.46735,
    "c": 0.15883,
    "h": 297.3
  },
  "luminance": 0.09133
}

Semantic roles & 50–950 ramp

primary

#663FA6

secondary

#A8BE83

accent

#D553A4

background

#F9F7FC

surface

#F2EDF8

border

#CCC8D1

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #663FA6

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

Preview Lab → · Contrast checker → · Palette generator →