#663BD1#663BD1

#663BD1 is a mid, highly saturated violet. Relative luminance 0.106; OKLCH L 49.6% C 0.215 H 289.2°. Best body text is #FFFFFF at 6.75:1 contrast (WCAG AA passes).

Color values

HEX	#663BD1
RGB	rgb(102, 59, 209)
HSL	hsl(257, 62%, 53%)
HSV	hsv(257, 72%, 82%)
CMYK	cmyk(51.2%, 71.8%, 0%, 18%)
CIE-LAB	lab(38.82, 53.72, -70.69)
CIE-LCH	lch(38.82, 88.78, 307.23°)
OKLab	oklab(49.64% 0.0708 -0.203)
OKLCH	oklch(49.64% 0.215 289.2)
XYZ	xyz(18.5487, 10.5553, 61.3693)
Luminance	0.1056 (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

#663BD1 #A6D13B

analogous

#3B5BD1 #663BD1 #B13BD1

triadic

#663BD1 #D1663B #3BD166

tetradic

#663BD1 #D13B5B #A6D13B #3BD1B1

square

#663BD1 #D13B5B #A6D13B #3BD1B1

split-complementary

#663BD1 #D1B13B #5BD13B

monochromatic

#361C76 #4C27A7 #663BD1 #8D6DDD #B39EE8

Accessibility & contrast

On white

6.75

#663BD1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#663BD1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663BD1

6.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663BD1	#FFFFFF	#000000	##FFFFFF
##663BD1	1.00	6.75	3.11	6.75
#FFFFFF	6.75	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005ED5

Deuteranopia (green-blind)

#0058CE

Tritanopia (blue-blind)

#3F6382

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #663bd1;
/* rgb */ color: rgb(102, 59, 209);
/* oklch */ color: oklch(49.6% 0.215 289.2);

Tailwind

colors: {
  custom: {
    50: '#9c75e0',
    500: '#663bd1',
    950: '#000000',
  },
}

SCSS

$custom: #663bd1;
$custom-light: #9c75e0;
$custom-dark: #000000;

JSON

{
  "hex": "#663bd1",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 209
  },
  "hsl": {
    "h": 257.2,
    "s": 61.983,
    "l": 52.549
  },
  "oklch": {
    "l": 0.49637,
    "c": 0.21505,
    "h": 289.2
  },
  "luminance": 0.10556
}

Semantic roles & 50–950 ramp

primary

#663BD1

secondary

#C2D493

accent

#E543B7

background

#FAF7FD

surface

#F4EDFB

border

#CEC8D4

text

#0F0915

muted

#7F7B83

Preview Lab

Preview with #663BD1

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

Preview Lab → · Contrast checker → · Palette generator →