#663DA8#663DA8

#663DA8 is a mid, vivid violet. Relative luminance 0.090; OKLCH L 46.6% C 0.164 H 297.2°. Best body text is #FFFFFF at 7.51:1 contrast (WCAG AA passes).

Color values

HEX	#663DA8
RGB	rgb(102, 61, 168)
HSL	hsl(263, 47%, 45%)
HSV	hsv(263, 64%, 66%)
CMYK	cmyk(39.3%, 63.7%, 0%, 34.1%)
CIE-LAB	lab(35.96, 41.42, -51.25)
CIE-LCH	lch(35.96, 65.89, 308.94°)
OKLab	oklab(46.58% 0.0751 -0.1459)
OKLCH	oklch(46.58% 0.164 297.2)
XYZ	xyz(14.2143, 8.9892, 38.0244)
Luminance	0.0899 (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

#663DA8 #7FA83D

analogous

#3D49A8 #663DA8 #9C3DA8

triadic

#663DA8 #A8663D #3DA866

tetradic

#663DA8 #A83D49 #7FA83D #3DA89C

square

#663DA8 #A83D49 #7FA83D #3DA89C

split-complementary

#663DA8 #A89C3D #49A83D

monochromatic

#2F1C4E #4B2D7B #663DA8 #855EC4 #A78BD5

Accessibility & contrast

On white

7.51

#663DA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.80

#663DA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663DA8

7.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663DA8	#FFFFFF	#000000	##FFFFFF
##663DA8	1.00	7.51	2.80	7.51
#FFFFFF	7.51	1.00	21.00	1.00
#000000	2.80	21.00	1.00	21.00
##FFFFFF	7.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055AB

Deuteranopia (green-blind)

#0053A6

Tritanopia (blue-blind)

#56556D

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #663da8;
/* rgb */ color: rgb(102, 61, 168);
/* oklch */ color: oklch(46.6% 0.164 297.2);

Tailwind

colors: {
  custom: {
    50: '#9675c3',
    500: '#663da8',
    950: '#000000',
  },
}

SCSS

$custom: #663da8;
$custom-light: #9675c3;
$custom-dark: #000000;

JSON

{
  "hex": "#663da8",
  "rgb": {
    "r": 102,
    "g": 61,
    "b": 168
  },
  "hsl": {
    "h": 262.991,
    "s": 46.725,
    "l": 44.902
  },
  "oklch": {
    "l": 0.4658,
    "c": 0.16414,
    "h": 297.2
  },
  "luminance": 0.08989
}

Semantic roles & 50–950 ramp

primary

#663DA8

secondary

#A8BF81

accent

#D651A3

background

#F9F7FC

surface

#F2EDF8

border

#CCC8D1

text

#0E0812

muted

#7E7B81

Preview Lab

Preview with #663DA8

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

Preview Lab → · Contrast checker → · Palette generator →