#663FD1#663FD1

#663FD1 is a mid, highly saturated violet. Relative luminance 0.110; OKLCH L 50.2% C 0.211 H 288.7°. Best body text is #FFFFFF at 6.57:1 contrast (WCAG AA passes).

Color values

HEX	#663FD1
RGB	rgb(102, 63, 209)
HSL	hsl(256, 61%, 53%)
HSV	hsv(256, 70%, 82%)
CMYK	cmyk(51.2%, 69.9%, 0%, 18%)
CIE-LAB	lab(39.55, 51.69, -69.49)
CIE-LCH	lch(39.55, 86.61, 306.64°)
OKLab	oklab(50.16% 0.0674 -0.1996)
OKLCH	oklch(50.16% 0.211 288.7)
XYZ	xyz(18.7623, 10.9824, 61.4404)
Luminance	0.1098 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 3.33

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663FD1 #AAD13F

analogous

#3F61D1 #663FD1 #AF3FD1

triadic

#663FD1 #D1663F #3FD166

tetradic

#663FD1 #D13F61 #AAD13F #3FD1AF

square

#663FD1 #D13F61 #AAD13F #3FD1AF

split-complementary

#663FD1 #D1AF3F #61D13F

monochromatic

#351D79 #4B29AA #663FD1 #8D70DD #B5A2E9

Accessibility & contrast

On white

6.57

#663FD1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#663FD1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663FD1

6.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FD1	#FFFFFF	#000000	##FFFFFF
##663FD1	1.00	6.57	3.20	6.57
#FFFFFF	6.57	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060D5

Deuteranopia (green-blind)

#0059CE

Tritanopia (blue-blind)

#3F6583

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #663fd1;
/* rgb */ color: rgb(102, 63, 209);
/* oklch */ color: oklch(50.2% 0.211 288.7);

Tailwind

colors: {
  custom: {
    50: '#9b77e0',
    500: '#663fd1',
    950: '#000000',
  },
}

SCSS

$custom: #663fd1;
$custom-light: #9b77e0;
$custom-dark: #000000;

JSON

{
  "hex": "#663fd1",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 209
  },
  "hsl": {
    "h": 256.027,
    "s": 61.345,
    "l": 53.333
  },
  "oklch": {
    "l": 0.50156,
    "c": 0.21065,
    "h": 288.7
  },
  "luminance": 0.10983
}

Semantic roles & 50–950 ramp

primary

#663FD1

secondary

#C5D597

accent

#E443B9

background

#FAF7FD

surface

#F4EDFB

border

#CEC8D4

text

#0F0915

muted

#7F7B83

Preview Lab

Preview with #663FD1

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

Preview Lab → · Contrast checker → · Palette generator →