#663DD1#663DD1

#663DD1 is a mid, highly saturated violet. Relative luminance 0.108; OKLCH L 49.9% C 0.213 H 289.0°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#663DD1
RGB	rgb(102, 61, 209)
HSL	hsl(257, 62%, 53%)
HSV	hsv(257, 71%, 82%)
CMYK	cmyk(51.2%, 70.8%, 0%, 18%)
CIE-LAB	lab(39.18, 52.71, -70.10)
CIE-LCH	lch(39.18, 87.71, 306.94°)
OKLab	oklab(49.89% 0.0692 -0.2013)
OKLCH	oklch(49.89% 0.213 289)
XYZ	xyz(18.6535, 10.7649, 61.4042)
Luminance	0.1077 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 3.24

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663DD1 #A8D13D

analogous

#3D5ED1 #663DD1 #B03DD1

triadic

#663DD1 #D1663D #3DD166

tetradic

#663DD1 #D13D5E #A8D13D #3DD1B0

square

#663DD1 #D13D5E #A8D13D #3DD1B0

split-complementary

#663DD1 #D1B03D #5ED13D

monochromatic

#361C77 #4C28A9 #663DD1 #8D6EDD #B4A0E8

Accessibility & contrast

On white

6.66

#663DD1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#663DD1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663DD1

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663DD1	#FFFFFF	#000000	##FFFFFF
##663DD1	1.00	6.66	3.15	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005FD5

Deuteranopia (green-blind)

#0059CE

Tritanopia (blue-blind)

#3F6483

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #663dd1;
/* rgb */ color: rgb(102, 61, 209);
/* oklch */ color: oklch(49.9% 0.213 289.0);

Tailwind

colors: {
  custom: {
    50: '#9b76e0',
    500: '#663dd1',
    950: '#000000',
  },
}

SCSS

$custom: #663dd1;
$custom-light: #9b76e0;
$custom-dark: #000000;

JSON

{
  "hex": "#663dd1",
  "rgb": {
    "r": 102,
    "g": 61,
    "b": 209
  },
  "hsl": {
    "h": 256.622,
    "s": 61.667,
    "l": 52.941
  },
  "oklch": {
    "l": 0.49893,
    "c": 0.21287,
    "h": 289
  },
  "luminance": 0.10766
}

Semantic roles & 50–950 ramp

primary

#663DD1

secondary

#C3D595

accent

#E543B8

background

#FAF7FD

surface

#F4EDFB

border

#CEC8D4

text

#0F0915

muted

#7F7B83

Preview Lab

Preview with #663DD1

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

Preview Lab → · Contrast checker → · Palette generator →