#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
RGBrgb(102, 23, 142)
HSLhsl(280, 72%, 32%)
HSVhsv(280, 84%, 56%)
CMYKcmyk(28.2%, 83.8%, 0%, 44.3%)
CIE-LABlab(27.82, 52.30, -48.63)
CIE-LCHlch(27.82, 71.42, 317.08°)
OKLaboklab(40.16% 0.1177 -0.138)
OKLCHoklch(40.16% 0.181 310.5)
XYZxyz(10.6674, 5.3908, 26.0645)
Luminance0.0539 (WCAG relative)
Temperaturecool
Familyviolet

Closest named colors

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
##66178E1.0010.102.0810.10
#FFFFFF10.101.0021.001.00
#0000002.0821.001.0021.00
##FFFFFF10.101.0021.001.00

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 →

#66178E Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva