#663BC9#663BC9

#663BC9 is a mid, highly saturated violet. Relative luminance 0.102; OKLCH L 48.9% C 0.206 H 290.6°. Best body text is #FFFFFF at 6.92:1 contrast (WCAG AA passes).

Color values

HEX	#663BC9
RGB	rgb(102, 59, 201)
HSL	hsl(258, 57%, 51%)
HSV	hsv(258, 71%, 79%)
CMYK	cmyk(49.3%, 70.6%, 0%, 21.2%)
CIE-LAB	lab(38.14, 51.52, -67.16)
CIE-LCH	lch(38.14, 84.64, 307.49°)
OKLab	oklab(48.95% 0.0725 -0.1927)
OKLCH	oklch(48.95% 0.206 290.6)
XYZ	xyz(17.5831, 10.1691, 56.2834)
Luminance	0.1017 (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

#663BC9 #9EC93B

analogous

#3B57C9 #663BC9 #AD3BC9

triadic

#663BC9 #C9663B #3BC966

tetradic

#663BC9 #C93B57 #9EC93B #3BC9AD

square

#663BC9 #C93B57 #9EC93B #3BC9AD

split-complementary

#663BC9 #C9AD3B #57C93B

monochromatic

#351E6C #4D2B9C #663BC9 #8B6BD6 #B19BE3

Accessibility & contrast

On white

6.92

#663BC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#663BC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663BC9

6.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663BC9	#FFFFFF	#000000	##FFFFFF
##663BC9	1.00	6.92	3.03	6.92
#FFFFFF	6.92	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005CCD

Deuteranopia (green-blind)

#0057C6

Tritanopia (blue-blind)

#45607E

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #663bc9;
/* rgb */ color: rgb(102, 59, 201);
/* oklch */ color: oklch(48.9% 0.206 290.6);

Tailwind

colors: {
  custom: {
    50: '#9a75da',
    500: '#663bc9',
    950: '#000000',
  },
}

SCSS

$custom: #663bc9;
$custom-light: #9a75da;
$custom-dark: #000000;

JSON

{
  "hex": "#663bc9",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 201
  },
  "hsl": {
    "h": 258.169,
    "s": 56.8,
    "l": 50.98
  },
  "oklch": {
    "l": 0.48948,
    "c": 0.20588,
    "h": 290.6
  },
  "luminance": 0.1017
}

Semantic roles & 50–950 ramp

primary

#663BC9

secondary

#BCCF90

accent

#E048B2

background

#FAF7FD

surface

#F3EDFB

border

#CDC8D4

text

#0F0815

muted

#7F7B83

Preview Lab

Preview with #663BC9

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

Preview Lab → · Contrast checker → · Palette generator →