#663F66#663F66

#663F66 is a dark, moderate purple. Relative luminance 0.073; OKLCH L 42.8% C 0.079 H 326.8°. Best body text is #FFFFFF at 8.51:1 contrast (WCAG AA passes).

Color values

HEX	#663F66
RGB	rgb(102, 63, 102)
HSL	hsl(300, 24%, 32%)
HSV	hsv(300, 38%, 40%)
CMYK	cmyk(0%, 38.2%, 0%, 60%)
CIE-LAB	lab(32.57, 23.95, -15.93)
CIE-LCH	lch(32.57, 28.77, 326.37°)
OKLab	oklab(42.83% 0.0663 -0.0433)
OKLCH	oklch(42.83% 0.079 326.8)
XYZ	xyz(9.6551, 7.3395, 13.4759)
Luminance	0.0734 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663F66 #3F663F

analogous

#533F66 #663F66 #663F53

triadic

#663F66 #66663F #3F6666

tetradic

#663F66 #66533F #3F663F #3F5366

square

#663F66 #66533F #3F663F #3F5366

split-complementary

#663F66 #53663F #3F6653

monochromatic

#1A101A #402840 #663F66 #8C568C #AA75AA

Accessibility & contrast

On white

8.51

#663F66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#663F66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663F66

8.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663F66	#FFFFFF	#000000	##FFFFFF
##663F66	1.00	8.51	2.47	8.51
#FFFFFF	8.51	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C4967

Deuteranopia (green-blind)

#464E65

Tritanopia (blue-blind)

#68434E

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #663f66;
/* rgb */ color: rgb(102, 63, 102);
/* oklch */ color: oklch(42.8% 0.079 326.8);

Tailwind

colors: {
  custom: {
    50: '#927591',
    500: '#663f66',
    950: '#000000',
  },
}

SCSS

$custom: #663f66;
$custom-light: #927591;
$custom-dark: #000000;

JSON

{
  "hex": "#663f66",
  "rgb": {
    "r": 102,
    "g": 63,
    "b": 102
  },
  "hsl": {
    "h": 300,
    "s": 23.636,
    "l": 32.353
  },
  "oklch": {
    "l": 0.4283,
    "c": 0.07924,
    "h": 326.8
  },
  "luminance": 0.07339
}

Semantic roles & 50–950 ramp

primary

#663F66

secondary

#6B956B

accent

#C06868

background

#F9F7F8

surface

#F1EDF0

border

#CBC8CB

text

#0D080D

muted

#7E7B7D

Preview Lab

Preview with #663F66

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

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