#66178C#66178C

#66178C is a dark, vivid purple. Relative luminance 0.053; OKLCH L 40.0% C 0.180 H 311.2°. Best body text is #FFFFFF at 10.16:1 contrast (WCAG AA passes).

Color values

HEX	#66178C
RGB	rgb(102, 23, 140)
HSL	hsl(281, 72%, 32%)
HSV	hsv(281, 84%, 55%)
CMYK	cmyk(27.1%, 83.6%, 0%, 45.1%)
CIE-LAB	lab(27.66, 51.87, -47.65)
CIE-LCH	lch(27.66, 70.44, 317.43°)
OKLab	oklab(40% 0.1183 -0.1352)
OKLCH	oklch(40% 0.18 311.2)
XYZ	xyz(10.5186, 5.3313, 25.2808)
Luminance	0.0533 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66178C #3D8C17

analogous

#2C178C #66178C #8C1778

triadic

#66178C #8C6617 #178C66

tetradic

#66178C #8C2C17 #3D8C17 #17788C

square

#66178C #8C2C17 #3D8C17 #17788C

split-complementary

#66178C #788C17 #178C2C

monochromatic

#190623 #400E57 #66178C #8C20C1 #AB3EDF

Accessibility & contrast

On white

10.16

#66178C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#66178C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #66178C

10.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66178C	#FFFFFF	#000000	##FFFFFF
##66178C	1.00	10.16	2.07	10.16
#FFFFFF	10.16	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8F

Deuteranopia (green-blind)

#00438A

Tritanopia (blue-blind)

#613653

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #66178c;
/* rgb */ color: rgb(102, 23, 140);
/* oklch */ color: oklch(40.0% 0.180 311.2);

Tailwind

colors: {
  custom: {
    50: '#9660ae',
    500: '#66178c',
    950: '#000000',
  },
}

SCSS

$custom: #66178c;
$custom-light: #9660ae;
$custom-dark: #000000;

JSON

{
  "hex": "#66178c",
  "rgb": {
    "r": 102,
    "g": 23,
    "b": 140
  },
  "hsl": {
    "h": 280.513,
    "s": 71.779,
    "l": 31.961
  },
  "oklch": {
    "l": 0.39997,
    "c": 0.17959,
    "h": 311.2
  },
  "luminance": 0.05331
}

Semantic roles & 50–950 ramp

primary

#66178C

secondary

#69BF3F

accent

#EF3974

background

#F9F5FA

surface

#F2EAF4

border

#CCC6CE

text

#0E0510

muted

#7E797F

Preview Lab

Preview with #66178C

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

Preview Lab → · Contrast checker → · Palette generator →