#663FC6#663FC6

#663FC6 is a mid, vivid violet. Relative luminance 0.105; OKLCH L 49.2% C 0.198 H 290.5°. Best body text is #FFFFFF at 6.79:1 contrast (WCAG AA passes).

Color values

HEX	#663FC6
RGB	rgb(102, 63, 198)
HSL	hsl(257, 54%, 51%)
HSV	hsv(257, 68%, 78%)
CMYK	cmyk(48.5%, 68.2%, 0%, 22.4%)
CIE-LAB	lab(38.65, 48.60, -64.59)
CIE-LCH	lch(38.65, 80.83, 306.96°)
OKLab	oklab(49.23% 0.0693 -0.1852)
OKLCH	oklch(49.23% 0.198 290.5)
XYZ	xyz(17.4471, 10.4563, 54.5141)
Luminance	0.1046 (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

#663FC6 #9FC63F

analogous

#3F5BC6 #663FC6 #A93FC6

triadic

#663FC6 #C6663F #3FC666

tetradic

#663FC6 #C63F5B #9FC63F #3FC6A9

square

#663FC6 #C63F5B #9FC63F #3FC6A9

split-complementary

#663FC6 #C6A93F #5BC63F

monochromatic

#35206B #4D2E9A #663FC6 #8C6ED4 #B19DE2

Accessibility & contrast

On white

6.79

#663FC6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#663FC6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663FC6

6.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FC6	#FFFFFF	#000000	##FFFFFF
##663FC6	1.00	6.79	3.09	6.79
#FFFFFF	6.79	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DCA

Deuteranopia (green-blind)

#0058C3

Tritanopia (blue-blind)

#46617D

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #663fc6;
/* rgb */ color: rgb(102, 63, 198);
/* oklch */ color: oklch(49.2% 0.198 290.5);

Tailwind

colors: {
  custom: {
    50: '#9a77d8',
    500: '#663fc6',
    950: '#000000',
  },
}

SCSS

$custom: #663fc6;
$custom-light: #9a77d8;
$custom-dark: #000000;

JSON

{
  "hex": "#663fc6",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 198
  },
  "hsl": {
    "h": 257.333,
    "s": 54.217,
    "l": 51.176
  },
  "oklch": {
    "l": 0.49233,
    "c": 0.19772,
    "h": 290.5
  },
  "luminance": 0.10457
}

Semantic roles & 50–950 ramp

primary

#663FC6

secondary

#BDCE93

accent

#DE4AB3

background

#FAF7FD

surface

#F3EDFB

border

#CDC8D4

text

#0F0915

muted

#7F7B83

Preview Lab

Preview with #663FC6

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

Preview Lab → · Contrast checker → · Palette generator →