#663DA4#663DA4

#663DA4 is a mid, vivid violet. Relative luminance 0.088; OKLCH L 46.3% C 0.159 H 298.3°. Best body text is #FFFFFF at 7.59:1 contrast (WCAG AA passes).

Color values

HEX	#663DA4
RGB	rgb(102, 61, 164)
HSL	hsl(264, 46%, 44%)
HSV	hsv(264, 63%, 64%)
CMYK	cmyk(37.8%, 62.8%, 0%, 35.7%)
CIE-LAB	lab(35.68, 40.34, -49.31)
CIE-LCH	lch(35.68, 63.71, 309.29°)
OKLab	oklab(46.28% 0.0754 -0.1403)
OKLCH	oklch(46.28% 0.159 298.3)
XYZ	xyz(13.8474, 8.8424, 36.0920)
Luminance	0.0884 (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

#663DA4 #7BA43D

analogous

#3D48A4 #663DA4 #9A3DA4

triadic

#663DA4 #A4663D #3DA466

tetradic

#663DA4 #A43D48 #7BA43D #3DA49A

square

#663DA4 #A43D48 #7BA43D #3DA49A

split-complementary

#663DA4 #A49A3D #48A43D

monochromatic

#2F1C4B #4A2C77 #663DA4 #855CC2 #A688D3

Accessibility & contrast

On white

7.59

#663DA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.77

#663DA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663DA4

7.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663DA4	#FFFFFF	#000000	##FFFFFF
##663DA4	1.00	7.59	2.77	7.59
#FFFFFF	7.59	1.00	21.00	1.00
#000000	2.77	21.00	1.00	21.00
##FFFFFF	7.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054A7

Deuteranopia (green-blind)

#0E53A2

Tritanopia (blue-blind)

#58546B

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #663da4;
/* rgb */ color: rgb(102, 61, 164);
/* oklch */ color: oklch(46.3% 0.159 298.3);

Tailwind

colors: {
  custom: {
    50: '#9675c0',
    500: '#663da4',
    950: '#000000',
  },
}

SCSS

$custom: #663da4;
$custom-light: #9675c0;
$custom-dark: #000000;

JSON

{
  "hex": "#663da4",
  "rgb": {
    "r": 102,
    "g": 61,
    "b": 164
  },
  "hsl": {
    "h": 263.883,
    "s": 45.778,
    "l": 44.118
  },
  "oklch": {
    "l": 0.46284,
    "c": 0.15923,
    "h": 298.3
  },
  "luminance": 0.08843
}

Semantic roles & 50–950 ramp

primary

#663DA4

secondary

#A5BD7F

accent

#D552A1

background

#F9F7FB

surface

#F2EDF7

border

#CCC8D0

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #663DA4

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

Preview Lab → · Contrast checker → · Palette generator →