#663FA8#663FA8

#663FA8 is a mid, vivid violet. Relative luminance 0.092; OKLCH L 46.9% C 0.161 H 296.8°. Best body text is #FFFFFF at 7.39:1 contrast (WCAG AA passes).

Color values

HEX	#663FA8
RGB	rgb(102, 63, 168)
HSL	hsl(262, 45%, 45%)
HSV	hsv(262, 63%, 66%)
CMYK	cmyk(39.3%, 62.5%, 0%, 34.1%)
CIE-LAB	lab(36.38, 40.30, -50.58)
CIE-LCH	lch(36.38, 64.67, 308.55°)
OKLab	oklab(46.88% 0.0728 -0.144)
OKLCH	oklch(46.88% 0.161 296.8)
XYZ	xyz(14.3231, 9.2067, 38.0606)
Luminance	0.0921 (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

#663FA8 #81A83F

analogous

#3F4CA8 #663FA8 #9B3FA8

triadic

#663FA8 #A8663F #3FA866

tetradic

#663FA8 #A83F4C #81A83F #3FA89B

square

#663FA8 #A83F4C #81A83F #3FA89B

split-complementary

#663FA8 #A89B3F #4CA83F

monochromatic

#301E4F #4B2E7B #663FA8 #8561C4 #A88DD4

Accessibility & contrast

On white

7.39

#663FA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#663FA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663FA8

7.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FA8	#FFFFFF	#000000	##FFFFFF
##663FA8	1.00	7.39	2.84	7.39
#FFFFFF	7.39	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056AB

Deuteranopia (green-blind)

#0854A6

Tritanopia (blue-blind)

#56566D

Achromatopsia (no color)

#565656

Design tokens & code

CSS

--color: #663fa8;
/* rgb */ color: rgb(102, 63, 168);
/* oklch */ color: oklch(46.9% 0.161 296.8);

Tailwind

colors: {
  custom: {
    50: '#9676c3',
    500: '#663fa8',
    950: '#000000',
  },
}

SCSS

$custom: #663fa8;
$custom-light: #9676c3;
$custom-dark: #000000;

JSON

{
  "hex": "#663fa8",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 168
  },
  "hsl": {
    "h": 262.286,
    "s": 45.455,
    "l": 45.294
  },
  "oklch": {
    "l": 0.46882,
    "c": 0.16132,
    "h": 296.8
  },
  "luminance": 0.09207
}

Semantic roles & 50–950 ramp

primary

#663FA8

secondary

#A9BF84

accent

#D553A5

background

#F9F7FC

surface

#F2EDF8

border

#CCC8D1

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #663FA8

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

Preview Lab → · Contrast checker → · Palette generator →