#663C92#663C92

#663C92 is a dark, vivid violet. Relative luminance 0.081; OKLCH L 44.9% C 0.138 H 303.9°. Best body text is #FFFFFF at 8.00:1 contrast (WCAG AA passes).

Color values

HEX	#663C92
RGB	rgb(102, 60, 146)
HSL	hsl(269, 42%, 40%)
HSV	hsv(269, 59%, 57%)
CMYK	cmyk(30.1%, 58.9%, 0%, 42.7%)
CIE-LAB	lab(34.26, 36.16, -40.70)
CIE-LCH	lch(34.26, 54.45, 311.62°)
OKLab	oklab(44.86% 0.0772 -0.115)
OKLCH	oklch(44.86% 0.138 303.9)
XYZ	xyz(12.2825, 8.1319, 28.1111)
Luminance	0.0813 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663C92 #68923C

analogous

#3C3D92 #663C92 #913C92

triadic

#663C92 #92663C #3C9266

tetradic

#663C92 #923C3D #68923C #3C9291

square

#663C92 #923C3D #68923C #3C9291

split-complementary

#663C92 #92913C #3D923C

monochromatic

#29183B #482A67 #663C92 #8453B8 #A37ECA

Accessibility & contrast

On white

8.00

#663C92 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#663C92 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663C92

8.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663C92	#FFFFFF	#000000	##FFFFFF
##663C92	1.00	8.00	2.63	8.00
#FFFFFF	8.00	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	8.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#185095

Deuteranopia (green-blind)

#295090

Tritanopia (blue-blind)

#5E4D61

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #663c92;
/* rgb */ color: rgb(102, 60, 146);
/* oklch */ color: oklch(44.9% 0.138 303.9);

Tailwind

colors: {
  custom: {
    50: '#9574b2',
    500: '#663c92',
    950: '#000000',
  },
}

SCSS

$custom: #663c92;
$custom-light: #9574b2;
$custom-dark: #000000;

JSON

{
  "hex": "#663c92",
  "rgb": {
    "r": 102,
    "g": 60,
    "b": 146
  },
  "hsl": {
    "h": 269.302,
    "s": 41.748,
    "l": 40.392
  },
  "oklch": {
    "l": 0.44858,
    "c": 0.13846,
    "h": 303.9
  },
  "luminance": 0.08132
}

Semantic roles & 50–950 ramp

primary

#663C92

secondary

#96B476

accent

#D25695

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0D0811

muted

#7E7B80

Preview Lab

Preview with #663C92

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

Preview Lab → · Contrast checker → · Palette generator →