#66178A#66178A

#66178A is a dark, vivid purple. Relative luminance 0.053; OKLCH L 39.8% C 0.178 H 311.9°. Best body text is #FFFFFF at 10.22:1 contrast (WCAG AA passes).

Color values

HEX	#66178A
RGB	rgb(102, 23, 138)
HSL	hsl(281, 71%, 32%)
HSV	hsv(281, 83%, 54%)
CMYK	cmyk(26.1%, 83.3%, 0%, 45.9%)
CIE-LAB	lab(27.50, 51.45, -46.67)
CIE-LCH	lch(27.50, 69.46, 317.79°)
OKLab	oklab(39.84% 0.1188 -0.1323)
OKLCH	oklch(39.84% 0.178 311.9)
XYZ	xyz(10.3725, 5.2728, 24.5112)
Luminance	0.0527 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66178A #3B8A17

analogous

#2C178A #66178A #8A1775

triadic

#66178A #8A6617 #178A66

tetradic

#66178A #8A2C17 #3B8A17 #17758A

square

#66178A #8A2C17 #3B8A17 #17758A

split-complementary

#66178A #758A17 #178A2C

monochromatic

#180621 #3F0E56 #66178A #8D20BE #AC3DDF

Accessibility & contrast

On white

10.22

#66178A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#66178A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #66178A

10.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66178A	#FFFFFF	#000000	##FFFFFF
##66178A	1.00	10.22	2.05	10.22
#FFFFFF	10.22	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D8D

Deuteranopia (green-blind)

#004288

Tritanopia (blue-blind)

#613552

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #66178a;
/* rgb */ color: rgb(102, 23, 138);
/* oklch */ color: oklch(39.8% 0.178 311.9);

Tailwind

colors: {
  custom: {
    50: '#9660ad',
    500: '#66178a',
    950: '#000000',
  },
}

SCSS

$custom: #66178a;
$custom-light: #9660ad;
$custom-dark: #000000;

JSON

{
  "hex": "#66178a",
  "rgb": {
    "r": 102,
    "g": 23,
    "b": 138
  },
  "hsl": {
    "h": 281.217,
    "s": 71.429,
    "l": 31.569
  },
  "oklch": {
    "l": 0.39835,
    "c": 0.17776,
    "h": 311.9
  },
  "luminance": 0.05273
}

Semantic roles & 50–950 ramp

primary

#66178A

secondary

#67BE3F

accent

#EE3A72

background

#F9F5FA

surface

#F2EAF4

border

#CCC6CE

text

#0E0510

muted

#7E797F

Preview Lab

Preview with #66178A

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

Preview Lab → · Contrast checker → · Palette generator →