#663D86#663D86

#663D86 is a dark, vivid violet. Relative luminance 0.079; OKLCH L 44.2% C 0.122 H 308.1°. Best body text is #FFFFFF at 8.15:1 contrast (WCAG AA passes).

Color values

HEX	#663D86
RGB	rgb(102, 61, 134)
HSL	hsl(274, 37%, 38%)
HSV	hsv(274, 54%, 53%)
CMYK	cmyk(23.9%, 54.5%, 0%, 47.5%)
CIE-LAB	lab(33.74, 32.55, -34.16)
CIE-LCH	lch(33.74, 47.18, 313.62°)
OKLab	oklab(44.24% 0.0752 -0.0958)
OKLCH	oklch(44.24% 0.122 308.1)
XYZ	xyz(11.4505, 7.8836, 23.4681)
Luminance	0.0788 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663D86 #5D863D

analogous

#413D86 #663D86 #863D81

triadic

#663D86 #86663D #3D8666

tetradic

#663D86 #86413D #5D863D #3D8186

square

#663D86 #86413D #5D863D #3D8186

split-complementary

#663D86 #81863D #3D8641

monochromatic

#261732 #462A5C #663D86 #8651B0 #A37BC3

Accessibility & contrast

On white

8.15

#663D86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#663D86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663D86

8.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663D86	#FFFFFF	#000000	##FFFFFF
##663D86	1.00	8.15	2.58	8.15
#FFFFFF	8.15	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#274E88

Deuteranopia (green-blind)

#345084

Tritanopia (blue-blind)

#614A5B

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #663d86;
/* rgb */ color: rgb(102, 61, 134);
/* oklch */ color: oklch(44.2% 0.122 308.1);

Tailwind

colors: {
  custom: {
    50: '#9474a9',
    500: '#663d86',
    950: '#000000',
  },
}

SCSS

$custom: #663d86;
$custom-light: #9474a9;
$custom-dark: #000000;

JSON

{
  "hex": "#663d86",
  "rgb": {
    "r": 102,
    "g": 61,
    "b": 134
  },
  "hsl": {
    "h": 273.699,
    "s": 37.436,
    "l": 38.235
  },
  "oklch": {
    "l": 0.44241,
    "c": 0.12181,
    "h": 308.1
  },
  "luminance": 0.07883
}

Semantic roles & 50–950 ramp

primary

#663D86

secondary

#8CAD72

accent

#CD5A8D

background

#F9F7FA

surface

#F2EDF4

border

#CCC8CE

text

#0D0810

muted

#7E7B7F

Preview Lab

Preview with #663D86

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

Preview Lab → · Contrast checker → · Palette generator →