#663FC4#663FC4

#663FC4 is a mid, vivid violet. Relative luminance 0.104; OKLCH L 49.1% C 0.195 H 290.9°. Best body text is #FFFFFF at 6.83:1 contrast (WCAG AA passes).

Color values

HEX	#663FC4
RGB	rgb(102, 63, 196)
HSL	hsl(258, 53%, 51%)
HSV	hsv(258, 68%, 77%)
CMYK	cmyk(48%, 67.9%, 0%, 23.1%)
CIE-LAB	lab(38.49, 48.04, -63.68)
CIE-LCH	lch(38.49, 79.77, 307.03°)
OKLab	oklab(49.07% 0.0696 -0.1825)
OKLCH	oklch(49.07% 0.195 290.9)
XYZ	xyz(17.2180, 10.3647, 53.3072)
Luminance	0.1037 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 0.97

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663FC4 #9DC43F

analogous

#3F5AC4 #663FC4 #A83FC4

triadic

#663FC4 #C4663F #3FC466

tetradic

#663FC4 #C43F5A #9DC43F #3FC4A8

square

#663FC4 #C43F5A #9DC43F #3FC4A8

split-complementary

#663FC4 #C4A83F #5AC43F

monochromatic

#352068 #4D2E97 #663FC4 #8B6ED2 #B19DE1

Accessibility & contrast

On white

6.83

#663FC4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#663FC4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663FC4

6.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FC4	#FFFFFF	#000000	##FFFFFF
##663FC4	1.00	6.83	3.07	6.83
#FFFFFF	6.83	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DC8

Deuteranopia (green-blind)

#0058C1

Tritanopia (blue-blind)

#48607C

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #663fc4;
/* rgb */ color: rgb(102, 63, 196);
/* oklch */ color: oklch(49.1% 0.195 290.9);

Tailwind

colors: {
  custom: {
    50: '#9a77d7',
    500: '#663fc4',
    950: '#000000',
  },
}

SCSS

$custom: #663fc4;
$custom-light: #9a77d7;
$custom-dark: #000000;

JSON

{
  "hex": "#663fc4",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 196
  },
  "hsl": {
    "h": 257.594,
    "s": 52.988,
    "l": 50.784
  },
  "oklch": {
    "l": 0.49068,
    "c": 0.19534,
    "h": 290.9
  },
  "luminance": 0.10365
}

Semantic roles & 50–950 ramp

primary

#663FC4

secondary

#BCCD92

accent

#DC4BB2

background

#FAF7FD

surface

#F3EDFA

border

#CDC8D3

text

#0F0914

muted

#7F7B83

Preview Lab

Preview with #663FC4

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

Preview Lab → · Contrast checker → · Palette generator →