#663BCF#663BCF

#663BCF is a mid, highly saturated violet. Relative luminance 0.105; OKLCH L 49.5% C 0.213 H 289.6°. Best body text is #FFFFFF at 6.79:1 contrast (WCAG AA passes).

Color values

HEX	#663BCF
RGB	rgb(102, 59, 207)
HSL	hsl(257, 61%, 52%)
HSV	hsv(257, 71%, 81%)
CMYK	cmyk(50.7%, 71.5%, 0%, 18.8%)
CIE-LAB	lab(38.65, 53.17, -69.81)
CIE-LCH	lch(38.65, 87.75, 307.29°)
OKLab	oklab(49.46% 0.0713 -0.2005)
OKLCH	oklch(49.46% 0.213 289.6)
XYZ	xyz(18.3027, 10.4569, 60.0734)
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

#663BCF #A4CF3B

analogous

#3B5ACF #663BCF #B03BCF

triadic

#663BCF #CF663B #3BCF66

tetradic

#663BCF #CF3B5A #A4CF3B #3BCFB0

square

#663BCF #CF3B5A #A4CF3B #3BCFB0

split-complementary

#663BCF #CFB03B #5ACF3B

monochromatic

#361C73 #4C28A5 #663BCF #8C6CDB #B39DE7

Accessibility & contrast

On white

6.79

#663BCF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#663BCF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663BCF

6.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663BCF	#FFFFFF	#000000	##FFFFFF
##663BCF	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)

#005ED3

Deuteranopia (green-blind)

#0057CC

Tritanopia (blue-blind)

#406281

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #663bcf;
/* rgb */ color: rgb(102, 59, 207);
/* oklch */ color: oklch(49.5% 0.213 289.6);

Tailwind

colors: {
  custom: {
    50: '#9b75df',
    500: '#663bcf',
    950: '#000000',
  },
}

SCSS

$custom: #663bcf;
$custom-light: #9b75df;
$custom-dark: #000000;

JSON

{
  "hex": "#663bcf",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 207
  },
  "hsl": {
    "h": 257.432,
    "s": 60.656,
    "l": 52.157
  },
  "oklch": {
    "l": 0.49464,
    "c": 0.21277,
    "h": 289.6
  },
  "luminance": 0.10458
}

Semantic roles & 50–950 ramp

primary

#663BCF

secondary

#C0D393

accent

#E444B5

background

#FAF7FD

surface

#F4EDFB

border

#CEC8D4

text

#0F0815

muted

#7F7B83

Preview Lab

Preview with #663BCF

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

Preview Lab → · Contrast checker → · Palette generator →