#663FBC#663FBC

#663FBC is a mid, vivid violet. Relative luminance 0.100; OKLCH L 48.4% C 0.186 H 292.4°. Best body text is #FFFFFF at 6.99:1 contrast (WCAG AA passes).

Color values

HEX	#663FBC
RGB	rgb(102, 63, 188)
HSL	hsl(259, 50%, 49%)
HSV	hsv(259, 66%, 74%)
CMYK	cmyk(45.7%, 66.5%, 0%, 26.3%)
CIE-LAB	lab(37.86, 45.81, -60.02)
CIE-LCH	lch(37.86, 75.51, 307.35°)
OKLab	oklab(48.42% 0.0708 -0.1718)
OKLCH	oklch(48.42% 0.186 292.4)
XYZ	xyz(16.3316, 10.0101, 48.6389)
Luminance	0.1001 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Bluey Purple

#6241C7

ΔE00 1.88

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663FBC #95BC3F

analogous

#3F57BC #663FBC #A53FBC

triadic

#663FBC #BC663F #3FBC66

tetradic

#663FBC #BC3F57 #95BC3F #3FBCA5

square

#663FBC #BC3F57 #95BC3F #3FBCA5

split-complementary

#663FBC #BCA53F #57BC3F

monochromatic

#342060 #4D308E #663FBC #8A6BCD #AE99DD

Accessibility & contrast

On white

6.99

#663FBC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.00

#663FBC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #663FBC

6.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663FBC	#FFFFFF	#000000	##FFFFFF
##663FBC	1.00	6.99	3.00	6.99
#FFFFFF	6.99	1.00	21.00	1.00
#000000	3.00	21.00	1.00	21.00
##FFFFFF	6.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005BC0

Deuteranopia (green-blind)

#0057B9

Tritanopia (blue-blind)

#4C5D78

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #663fbc;
/* rgb */ color: rgb(102, 63, 188);
/* oklch */ color: oklch(48.4% 0.186 292.4);

Tailwind

colors: {
  custom: {
    50: '#9977d1',
    500: '#663fbc',
    950: '#000000',
  },
}

SCSS

$custom: #663fbc;
$custom-light: #9977d1;
$custom-dark: #000000;

JSON

{
  "hex": "#663fbc",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 188
  },
  "hsl": {
    "h": 258.72,
    "s": 49.801,
    "l": 49.216
  },
  "oklch": {
    "l": 0.4842,
    "c": 0.18577,
    "h": 292.4
  },
  "luminance": 0.10011
}

Semantic roles & 50–950 ramp

primary

#663FBC

secondary

#B6C98E

accent

#D94EAE

background

#F9F7FC

surface

#F2EDF9

border

#CCC8D2

text

#0E0914

muted

#7E7B82

Preview Lab

Preview with #663FBC

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

Preview Lab → · Contrast checker → · Palette generator →