#66178E#66178E

#66178E is a dark, vivid violet. Relative luminance 0.054; OKLCH L 40.2% C 0.181 H 310.5°. Best body text is #FFFFFF at 10.10:1 contrast (WCAG AA passes).

Color values

HEX	#66178E
RGB	rgb(102, 23, 142)
HSL	hsl(280, 72%, 32%)
HSV	hsv(280, 84%, 56%)
CMYK	cmyk(28.2%, 83.8%, 0%, 44.3%)
CIE-LAB	lab(27.82, 52.30, -48.63)
CIE-LCH	lch(27.82, 71.42, 317.08°)
OKLab	oklab(40.16% 0.1177 -0.138)
OKLCH	oklch(40.16% 0.181 310.5)
XYZ	xyz(10.6674, 5.3908, 26.0645)
Luminance	0.0539 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66178E #3F8E17

analogous

#2B178E #66178E #8E177A

triadic

#66178E #8E6617 #178E66

tetradic

#66178E #8E2B17 #3F8E17 #177A8E

square

#66178E #8E2B17 #3F8E17 #177A8E

split-complementary

#66178E #7A8E17 #178E2B

monochromatic

#1A0625 #400E59 #66178E #8C20C3 #AA3FE0

Accessibility & contrast

On white

10.10

#66178E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#66178E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #66178E

10.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66178E	#FFFFFF	#000000	##FFFFFF
##66178E	1.00	10.10	2.08	10.10
#FFFFFF	10.10	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E91

Deuteranopia (green-blind)

#00438C

Tritanopia (blue-blind)

#603654

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #66178e;
/* rgb */ color: rgb(102, 23, 142);
/* oklch */ color: oklch(40.2% 0.181 310.5);

Tailwind

colors: {
  custom: {
    50: '#9660b0',
    500: '#66178e',
    950: '#000000',
  },
}

SCSS

$custom: #66178e;
$custom-light: #9660b0;
$custom-dark: #000000;

JSON

{
  "hex": "#66178e",
  "rgb": {
    "r": 102,
    "g": 23,
    "b": 142
  },
  "hsl": {
    "h": 279.832,
    "s": 72.121,
    "l": 32.353
  },
  "oklch": {
    "l": 0.4016,
    "c": 0.18143,
    "h": 310.5
  },
  "luminance": 0.05391
}

Semantic roles & 50–950 ramp

primary

#66178E

secondary

#6BC040

accent

#EF3976

background

#F9F6FA

surface

#F2EBF5

border

#CCC6CF

text

#0E0511

muted

#7E7A80

Preview Lab

Preview with #66178E

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

Preview Lab → · Contrast checker → · Palette generator →