#663FC5#663FC5

#663FC5 is a mid, vivid violet. Relative luminance 0.104; OKLCH L 49.1% C 0.197 H 290.7°. Best body text is #FFFFFF at 6.81:1 contrast (WCAG AA passes).

Color values

HEX	#663FC5
RGB	rgb(102, 63, 197)
HSL	hsl(257, 54%, 51%)
HSV	hsv(257, 68%, 77%)
CMYK	cmyk(48.2%, 68%, 0%, 22.7%)
CIE-LAB	lab(38.57, 48.33, -64.14)
CIE-LCH	lch(38.57, 80.30, 307.00°)
OKLab	oklab(49.15% 0.0695 -0.1838)
OKLCH	oklch(49.15% 0.197 290.7)
XYZ	xyz(17.3322, 10.4103, 53.9087)
Luminance	0.1041 (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

#663FC5 #9EC53F

analogous

#3F5BC5 #663FC5 #A93FC5

triadic

#663FC5 #C5663F #3FC566

tetradic

#663FC5 #C53F5B #9EC53F #3FC5A9

square

#663FC5 #C53F5B #9EC53F #3FC5A9

split-complementary

#663FC5 #C5A93F #5BC53F

monochromatic

#35206A #4D2E99 #663FC5 #8B6ED3 #B19DE1

Accessibility & contrast

On white

6.81

#663FC5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.08

#663FC5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663FC5

6.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FC5	#FFFFFF	#000000	##FFFFFF
##663FC5	1.00	6.81	3.08	6.81
#FFFFFF	6.81	1.00	21.00	1.00
#000000	3.08	21.00	1.00	21.00
##FFFFFF	6.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DC9

Deuteranopia (green-blind)

#0058C2

Tritanopia (blue-blind)

#47617D

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #663fc5;
/* rgb */ color: rgb(102, 63, 197);
/* oklch */ color: oklch(49.1% 0.197 290.7);

Tailwind

colors: {
  custom: {
    50: '#9a77d8',
    500: '#663fc5',
    950: '#000000',
  },
}

SCSS

$custom: #663fc5;
$custom-light: #9a77d8;
$custom-dark: #000000;

JSON

{
  "hex": "#663fc5",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 197
  },
  "hsl": {
    "h": 257.463,
    "s": 53.6,
    "l": 50.98
  },
  "oklch": {
    "l": 0.4915,
    "c": 0.19653,
    "h": 290.7
  },
  "luminance": 0.10411
}

Semantic roles & 50–950 ramp

primary

#663FC5

secondary

#BCCE92

accent

#DD4BB2

background

#FAF7FD

surface

#F3EDFA

border

#CDC8D3

text

#0F0915

muted

#7F7B83

Preview Lab

Preview with #663FC5

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

Preview Lab → · Contrast checker → · Palette generator →