#663FA4#663FA4

#663FA4 is a mid, vivid violet. Relative luminance 0.091; OKLCH L 46.6% C 0.156 H 297.8°. Best body text is #FFFFFF at 7.47:1 contrast (WCAG AA passes).

Color values

HEX	#663FA4
RGB	rgb(102, 63, 164)
HSL	hsl(263, 44%, 45%)
HSV	hsv(263, 62%, 64%)
CMYK	cmyk(37.8%, 61.6%, 0%, 35.7%)
CIE-LAB	lab(36.10, 39.22, -48.63)
CIE-LCH	lch(36.10, 62.48, 308.88°)
OKLab	oklab(46.59% 0.073 -0.1383)
OKLCH	oklch(46.59% 0.156 297.8)
XYZ	xyz(13.9561, 9.0599, 36.1282)
Luminance	0.0906 (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

#663FA4 #7DA43F

analogous

#3F4BA4 #663FA4 #983FA4

triadic

#663FA4 #A4663F #3FA466

tetradic

#663FA4 #A43F4B #7DA43F #3FA498

square

#663FA4 #A43F4B #7DA43F #3FA498

split-complementary

#663FA4 #A4983F #4BA43F

monochromatic

#2F1D4C #4B2E78 #663FA4 #855FC1 #A78BD2

Accessibility & contrast

On white

7.47

#663FA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.81

#663FA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663FA4

7.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FA4	#FFFFFF	#000000	##FFFFFF
##663FA4	1.00	7.47	2.81	7.47
#FFFFFF	7.47	1.00	21.00	1.00
#000000	2.81	21.00	1.00	21.00
##FFFFFF	7.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055A7

Deuteranopia (green-blind)

#1454A2

Tritanopia (blue-blind)

#58556B

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #663fa4;
/* rgb */ color: rgb(102, 63, 164);
/* oklch */ color: oklch(46.6% 0.156 297.8);

Tailwind

colors: {
  custom: {
    50: '#9676c0',
    500: '#663fa4',
    950: '#000000',
  },
}

SCSS

$custom: #663fa4;
$custom-light: #9676c0;
$custom-dark: #000000;

JSON

{
  "hex": "#663fa4",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 164
  },
  "hsl": {
    "h": 263.168,
    "s": 44.493,
    "l": 44.51
  },
  "oklch": {
    "l": 0.46589,
    "c": 0.15633,
    "h": 297.8
  },
  "luminance": 0.0906
}

Semantic roles & 50–950 ramp

primary

#663FA4

secondary

#A6BD82

accent

#D454A3

background

#F9F7FB

surface

#F2EDF7

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #663FA4

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

Preview Lab → · Contrast checker → · Palette generator →