#663A7E#663A7E

#663A7E is a dark, moderate violet. Relative luminance 0.074; OKLCH L 43.3% C 0.117 H 312.3°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#663A7E
RGB	rgb(102, 58, 126)
HSL	hsl(279, 37%, 36%)
HSV	hsv(279, 54%, 49%)
CMYK	cmyk(19%, 54%, 0%, 50.6%)
CIE-LAB	lab(32.61, 32.35, -30.99)
CIE-LCH	lch(32.61, 44.79, 316.23°)
OKLab	oklab(43.25% 0.0789 -0.0866)
OKLCH	oklch(43.25% 0.117 312.3)
XYZ	xyz(10.7578, 7.3575, 20.5881)
Luminance	0.0736 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663A7E #527E3A

analogous

#443A7E #663A7E #7E3A74

triadic

#663A7E #7E663A #3A7E66

tetradic

#663A7E #7E443A #527E3A #3A747E

square

#663A7E #7E443A #527E3A #3A747E

split-complementary

#663A7E #747E3A #3A7E44

monochromatic

#22132A #442754 #663A7E #884DA8 #A474BF

Accessibility & contrast

On white

8.50

#663A7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#663A7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663A7E

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663A7E	#FFFFFF	#000000	##FFFFFF
##663A7E	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#294A80

Deuteranopia (green-blind)

#374E7C

Tritanopia (blue-blind)

#644556

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #663a7e;
/* rgb */ color: rgb(102, 58, 126);
/* oklch */ color: oklch(43.3% 0.117 312.3);

Tailwind

colors: {
  custom: {
    50: '#9372a4',
    500: '#663a7e',
    950: '#000000',
  },
}

SCSS

$custom: #663a7e;
$custom-light: #9372a4;
$custom-dark: #000000;

JSON

{
  "hex": "#663a7e",
  "rgb": {
    "r": 102,
    "g": 58,
    "b": 126
  },
  "hsl": {
    "h": 278.824,
    "s": 36.957,
    "l": 36.078
  },
  "oklch": {
    "l": 0.43254,
    "c": 0.11712,
    "h": 312.3
  },
  "luminance": 0.07357
}

Semantic roles & 50–950 ramp

primary

#663A7E

secondary

#81A86C

accent

#CD5B83

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #663A7E

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

Preview Lab → · Contrast checker → · Palette generator →