#663FA5#663FA5

#663FA5 is a mid, vivid violet. Relative luminance 0.091; OKLCH L 46.7% C 0.158 H 297.6°. Best body text is #FFFFFF at 7.45:1 contrast (WCAG AA passes).

Color values

HEX	#663FA5
RGB	rgb(102, 63, 165)
HSL	hsl(263, 45%, 45%)
HSV	hsv(263, 62%, 65%)
CMYK	cmyk(38.2%, 61.8%, 0%, 35.3%)
CIE-LAB	lab(36.17, 39.49, -49.12)
CIE-LCH	lch(36.17, 63.02, 308.79°)
OKLab	oklab(46.66% 0.0729 -0.1397)
OKLCH	oklch(46.66% 0.158 297.6)
XYZ	xyz(14.0468, 9.0962, 36.6057)
Luminance	0.0910 (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

#663FA5 #7EA53F

analogous

#3F4BA5 #663FA5 #993FA5

triadic

#663FA5 #A5663F #3FA566

tetradic

#663FA5 #A53F4B #7EA53F #3FA599

square

#663FA5 #A53F4B #7EA53F #3FA599

split-complementary

#663FA5 #A5993F #4BA53F

monochromatic

#2F1D4C #4B2E79 #663FA5 #855FC2 #A78CD3

Accessibility & contrast

On white

7.45

#663FA5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.82

#663FA5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663FA5

7.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FA5	#FFFFFF	#000000	##FFFFFF
##663FA5	1.00	7.45	2.82	7.45
#FFFFFF	7.45	1.00	21.00	1.00
#000000	2.82	21.00	1.00	21.00
##FFFFFF	7.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055A8

Deuteranopia (green-blind)

#1154A3

Tritanopia (blue-blind)

#57556C

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #663fa5;
/* rgb */ color: rgb(102, 63, 165);
/* oklch */ color: oklch(46.7% 0.158 297.6);

Tailwind

colors: {
  custom: {
    50: '#9676c0',
    500: '#663fa5',
    950: '#000000',
  },
}

SCSS

$custom: #663fa5;
$custom-light: #9676c0;
$custom-dark: #000000;

JSON

{
  "hex": "#663fa5",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 165
  },
  "hsl": {
    "h": 262.941,
    "s": 44.737,
    "l": 44.706
  },
  "oklch": {
    "l": 0.46662,
    "c": 0.15759,
    "h": 297.6
  },
  "luminance": 0.09096
}

Semantic roles & 50–950 ramp

primary

#663FA5

secondary

#A7BE82

accent

#D453A3

background

#F9F7FB

surface

#F2EDF7

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #663FA5

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

Preview Lab → · Contrast checker → · Palette generator →