#663A9B#663A9B

#663A9B is a mid, vivid violet. Relative luminance 0.082; OKLCH L 45.2% C 0.153 H 301.4°. Best body text is #FFFFFF at 7.94:1 contrast (WCAG AA passes).

Color values

HEX	#663A9B
RGB	rgb(102, 58, 155)
HSL	hsl(267, 46%, 42%)
HSV	hsv(267, 63%, 61%)
CMYK	cmyk(34.2%, 62.6%, 0%, 39.2%)
CIE-LAB	lab(34.43, 39.63, -45.90)
CIE-LCH	lch(34.43, 60.64, 310.81°)
OKLab	oklab(45.18% 0.0796 -0.1302)
OKLCH	oklch(45.18% 0.153 301.4)
XYZ	xyz(12.9075, 8.2174, 31.9101)
Luminance	0.0822 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663A9B #6F9B3A

analogous

#3A3F9B #663A9B #973A9B

triadic

#663A9B #9B663A #3A9B66

tetradic

#663A9B #9B3A3F #6F9B3A #3A9B97

square

#663A9B #9B3A3F #6F9B3A #3A9B97

split-complementary

#663A9B #9B973A #3F9B3A

monochromatic

#2B1942 #49296E #663A9B #8453BF #A480CF

Accessibility & contrast

On white

7.94

#663A9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.64

#663A9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663A9B

7.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663A9B	#FFFFFF	#000000	##FFFFFF
##663A9B	1.00	7.94	2.64	7.94
#FFFFFF	7.94	1.00	21.00	1.00
#000000	2.64	21.00	1.00	21.00
##FFFFFF	7.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00509E

Deuteranopia (green-blind)

#1A5099

Tritanopia (blue-blind)

#5B4F65

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #663a9b;
/* rgb */ color: rgb(102, 58, 155);
/* oklch */ color: oklch(45.2% 0.153 301.4);

Tailwind

colors: {
  custom: {
    50: '#9572b9',
    500: '#663a9b',
    950: '#000000',
  },
}

SCSS

$custom: #663a9b;
$custom-light: #9572b9;
$custom-dark: #000000;

JSON

{
  "hex": "#663a9b",
  "rgb": {
    "r": 102,
    "g": 58,
    "b": 155
  },
  "hsl": {
    "h": 267.216,
    "s": 45.54,
    "l": 41.765
  },
  "oklch": {
    "l": 0.45178,
    "c": 0.15259,
    "h": 301.4
  },
  "luminance": 0.08217
}

Semantic roles & 50–950 ramp

primary

#663A9B

secondary

#9BB978

accent

#D5539A

background

#F9F7FB

surface

#F2EDF6

border

#CCC8D0

text

#0E0811

muted

#7E7B80

Preview Lab

Preview with #663A9B

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

Preview Lab → · Contrast checker → · Palette generator →