#663B72#663B72

#663B72 is a dark, moderate purple. Relative luminance 0.072; OKLCH L 42.7% C 0.101 H 318.6°. Best body text is #FFFFFF at 8.63:1 contrast (WCAG AA passes).

Color values

HEX	#663B72
RGB	rgb(102, 59, 114)
HSL	hsl(287, 32%, 34%)
HSV	hsv(287, 48%, 45%)
CMYK	cmyk(10.5%, 48.2%, 0%, 55.3%)
CIE-LAB	lab(32.19, 28.97, -24.12)
CIE-LCH	lch(32.19, 37.70, 320.22°)
OKLab	oklab(42.73% 0.0757 -0.0667)
OKLCH	oklch(42.73% 0.101 318.6)
XYZ	xyz(10.0803, 7.1680, 16.7689)
Luminance	0.0717 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#663B72 #47723B

analogous

#4B3B72 #663B72 #723B63

triadic

#663B72 #72663B #3B7266

tetradic

#663B72 #724B3B #47723B #3B6372

square

#663B72 #724B3B #47723B #3B6372

split-complementary

#663B72 #63723B #3B724B

monochromatic

#1E1121 #42264A #663B72 #8A509A #A772B6

Accessibility & contrast

On white

8.63

#663B72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#663B72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #663B72

8.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##663B72	#FFFFFF	#000000	##FFFFFF
##663B72	1.00	8.63	2.43	8.63
#FFFFFF	8.63	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#324974

Deuteranopia (green-blind)

#3E4D70

Tritanopia (blue-blind)

#664251

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #663b72;
/* rgb */ color: rgb(102, 59, 114);
/* oklch */ color: oklch(42.7% 0.101 318.6);

Tailwind

colors: {
  custom: {
    50: '#93729b',
    500: '#663b72',
    950: '#000000',
  },
}

SCSS

$custom: #663b72;
$custom-light: #93729b;
$custom-dark: #000000;

JSON

{
  "hex": "#663b72",
  "rgb": {
    "r": 102,
    "g": 59,
    "b": 114
  },
  "hsl": {
    "h": 286.909,
    "s": 31.792,
    "l": 33.922
  },
  "oklch": {
    "l": 0.42731,
    "c": 0.10086,
    "h": 318.6
  },
  "luminance": 0.07168
}

Semantic roles & 50–950 ramp

primary

#663B72

secondary

#75A069

accent

#C86077

background

#F9F7F9

surface

#F1EDF2

border

#CBC8CC

text

#0D080E

muted

#7E7B7E

Preview Lab

Preview with #663B72

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

Preview Lab → · Contrast checker → · Palette generator →