#663D82#663D82

#663D82 is a dark, moderate violet. Relative luminance 0.078; OKLCH L 44.0% C 0.117 H 309.9°. Best body text is #FFFFFF at 8.22:1 contrast (WCAG AA passes).

Color values

HEX	#663D82
RGB	rgb(102, 61, 130)
HSL	hsl(276, 36%, 37%)
HSV	hsv(276, 53%, 51%)
CMYK	cmyk(21.5%, 53.1%, 0%, 49%)
CIE-LAB	lab(33.51, 31.56, -32.05)
CIE-LCH	lch(33.51, 44.98, 314.56°)
OKLab	oklab(43.99% 0.0749 -0.0897)
OKLCH	oklch(43.99% 0.117 309.9)
XYZ	xyz(11.1767, 7.7742, 22.0265)
Luminance	0.0777 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663D82 #59823D

analogous

#433D82 #663D82 #823D7C

triadic

#663D82 #82663D #3D8266

tetradic

#663D82 #82433D #59823D #3D7C82

square

#663D82 #82433D #59823D #3D7C82

split-complementary

#663D82 #7C823D #3D8243

monochromatic

#25162F #452958 #663D82 #8751AC #A379C0

Accessibility & contrast

On white

8.22

#663D82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#663D82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663D82

8.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663D82	#FFFFFF	#000000	##FFFFFF
##663D82	1.00	8.22	2.55	8.22
#FFFFFF	8.22	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A4D84

Deuteranopia (green-blind)

#374F80

Tritanopia (blue-blind)

#624959

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #663d82;
/* rgb */ color: rgb(102, 61, 130);
/* oklch */ color: oklch(44.0% 0.117 309.9);

Tailwind

colors: {
  custom: {
    50: '#9374a7',
    500: '#663d82',
    950: '#000000',
  },
}

SCSS

$custom: #663d82;
$custom-light: #9374a7;
$custom-dark: #000000;

JSON

{
  "hex": "#663d82",
  "rgb": {
    "r": 102,
    "g": 61,
    "b": 130
  },
  "hsl": {
    "h": 275.652,
    "s": 36.126,
    "l": 37.451
  },
  "oklch": {
    "l": 0.43994,
    "c": 0.1168,
    "h": 309.9
  },
  "luminance": 0.07774
}

Semantic roles & 50–950 ramp

primary

#663D82

secondary

#88AA71

accent

#CC5C89

background

#F9F7FA

surface

#F1EDF4

border

#CBC8CE

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #663D82

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

Preview Lab → · Contrast checker → · Palette generator →