#663FC9#663FC9

#663FC9 is a mid, highly saturated violet. Relative luminance 0.106; OKLCH L 49.5% C 0.201 H 290.0°. Best body text is #FFFFFF at 6.73:1 contrast (WCAG AA passes).

Color values

HEX	#663FC9
RGB	rgb(102, 63, 201)
HSL	hsl(257, 56%, 52%)
HSV	hsv(257, 69%, 79%)
CMYK	cmyk(49.3%, 68.7%, 0%, 21.2%)
CIE-LAB	lab(38.89, 49.44, -65.94)
CIE-LCH	lch(38.89, 82.42, 306.87°)
OKLab	oklab(49.48% 0.0688 -0.1891)
OKLCH	oklch(49.48% 0.201 290)
XYZ	xyz(17.7966, 10.5961, 56.3546)
Luminance	0.1060 (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

#663FC9 #A2C93F

analogous

#3F5DC9 #663FC9 #AB3FC9

triadic

#663FC9 #C9663F #3FC966

tetradic

#663FC9 #C93F5D #A2C93F #3FC9AB

square

#663FC9 #C93F5D #A2C93F #3FC9AB

split-complementary

#663FC9 #C9AB3F #5DC93F

monochromatic

#361F6F #4D2D9E #663FC9 #8C6FD6 #B29FE4

Accessibility & contrast

On white

6.73

#663FC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.12

#663FC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663FC9

6.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FC9	#FFFFFF	#000000	##FFFFFF
##663FC9	1.00	6.73	3.12	6.73
#FFFFFF	6.73	1.00	21.00	1.00
#000000	3.12	21.00	1.00	21.00
##FFFFFF	6.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ECD

Deuteranopia (green-blind)

#0058C6

Tritanopia (blue-blind)

#44627F

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #663fc9;
/* rgb */ color: rgb(102, 63, 201);
/* oklch */ color: oklch(49.5% 0.201 290.0);

Tailwind

colors: {
  custom: {
    50: '#9a77da',
    500: '#663fc9',
    950: '#000000',
  },
}

SCSS

$custom: #663fc9;
$custom-light: #9a77da;
$custom-dark: #000000;

JSON

{
  "hex": "#663fc9",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 201
  },
  "hsl": {
    "h": 256.957,
    "s": 56.098,
    "l": 51.765
  },
  "oklch": {
    "l": 0.49481,
    "c": 0.20127,
    "h": 290
  },
  "luminance": 0.10597
}

Semantic roles & 50–950 ramp

primary

#663FC9

secondary

#BFD094

accent

#DF48B5

background

#FAF7FD

surface

#F3EDFB

border

#CDC8D4

text

#0F0915

muted

#7F7B83

Preview Lab

Preview with #663FC9

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

Preview Lab → · Contrast checker → · Palette generator →