#66178F#66178F

#66178F is a dark, vivid violet. Relative luminance 0.054; OKLCH L 40.2% C 0.182 H 310.1°. Best body text is #FFFFFF at 10.08:1 contrast (WCAG AA passes).

Color values

HEX	#66178F
RGB	rgb(102, 23, 143)
HSL	hsl(280, 72%, 33%)
HSV	hsv(280, 84%, 56%)
CMYK	cmyk(28.7%, 83.9%, 0%, 43.9%)
CIE-LAB	lab(27.90, 52.52, -49.12)
CIE-LCH	lch(27.90, 71.90, 316.92°)
OKLab	oklab(40.24% 0.1175 -0.1395)
OKLCH	oklch(40.24% 0.182 310.1)
XYZ	xyz(10.7428, 5.4210, 26.4617)
Luminance	0.0542 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66178F #408F17

analogous

#2A178F #66178F #8F177C

triadic

#66178F #8F6617 #178F66

tetradic

#66178F #8F2A17 #408F17 #177C8F

square

#66178F #8F2A17 #408F17 #177C8F

split-complementary

#66178F #7C8F17 #178F2A

monochromatic

#1B0626 #400F5A #66178F #8C1FC4 #AA40E0

Accessibility & contrast

On white

10.08

#66178F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#66178F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #66178F

10.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66178F	#FFFFFF	#000000	##FFFFFF
##66178F	1.00	10.08	2.08	10.08
#FFFFFF	10.08	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F92

Deuteranopia (green-blind)

#00438D

Tritanopia (blue-blind)

#603755

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #66178f;
/* rgb */ color: rgb(102, 23, 143);
/* oklch */ color: oklch(40.2% 0.182 310.1);

Tailwind

colors: {
  custom: {
    50: '#9760b1',
    500: '#66178f',
    950: '#000000',
  },
}

SCSS

$custom: #66178f;
$custom-light: #9760b1;
$custom-dark: #000000;

JSON

{
  "hex": "#66178f",
  "rgb": {
    "r": 102,
    "g": 23,
    "b": 143
  },
  "hsl": {
    "h": 279.5,
    "s": 72.289,
    "l": 32.549
  },
  "oklch": {
    "l": 0.40242,
    "c": 0.18235,
    "h": 310.1
  },
  "luminance": 0.05421
}

Semantic roles & 50–950 ramp

primary

#66178F

secondary

#6DC141

accent

#EF3977

background

#F9F6FB

surface

#F2EBF6

border

#CCC6D0

text

#0E0511

muted

#7E7A80

Preview Lab

Preview with #66178F

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

Preview Lab → · Contrast checker → · Palette generator →