#663C7C#663C7C

#663C7C is a dark, moderate violet. Relative luminance 0.075; OKLCH L 43.5% C 0.111 H 312.9°. Best body text is #FFFFFF at 8.39:1 contrast (WCAG AA passes).

Color values

HEX	#663C7C
RGB	rgb(102, 60, 124)
HSL	hsl(279, 35%, 36%)
HSV	hsv(279, 52%, 49%)
CMYK	cmyk(17.7%, 51.6%, 0%, 51.4%)
CIE-LAB	lab(32.95, 30.70, -29.21)
CIE-LCH	lch(32.95, 42.37, 316.43°)
OKLab	oklab(43.47% 0.0757 -0.0814)
OKLCH	oklch(43.47% 0.111 312.9)
XYZ	xyz(10.7328, 7.5120, 19.9494)
Luminance	0.0751 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663C7C #527C3C

analogous

#463C7C #663C7C #7C3C72

triadic

#663C7C #7C663C #3C7C66

tetradic

#663C7C #7C463C #527C3C #3C727C

square

#663C7C #7C463C #527C3C #3C727C

split-complementary

#663C7C #727C3C #3C7C46

monochromatic

#22142A #442853 #663C7C #8850A5 #A476BD

Accessibility & contrast

On white

8.39

#663C7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#663C7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663C7C

8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663C7C	#FFFFFF	#000000	##FFFFFF
##663C7C	1.00	8.39	2.50	8.39
#FFFFFF	8.39	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D4B7E

Deuteranopia (green-blind)

#3A4E7A

Tritanopia (blue-blind)

#644656

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #663c7c;
/* rgb */ color: rgb(102, 60, 124);
/* oklch */ color: oklch(43.5% 0.111 312.9);

Tailwind

colors: {
  custom: {
    50: '#9373a2',
    500: '#663c7c',
    950: '#000000',
  },
}

SCSS

$custom: #663c7c;
$custom-light: #9373a2;
$custom-dark: #000000;

JSON

{
  "hex": "#663c7c",
  "rgb": {
    "r": 102,
    "g": 60,
    "b": 124
  },
  "hsl": {
    "h": 279.375,
    "s": 34.783,
    "l": 36.078
  },
  "oklch": {
    "l": 0.43468,
    "c": 0.11113,
    "h": 312.9
  },
  "luminance": 0.07512
}

Semantic roles & 50–950 ramp

primary

#663C7C

secondary

#81A66D

accent

#CB5D83

background

#F9F7FA

surface

#F1EDF3

border

#CBC8CD

text

#0D080F

muted

#7E7B7F

Preview Lab

Preview with #663C7C

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

Preview Lab → · Contrast checker → · Palette generator →