#66188B#66188B

#66188B is a dark, vivid purple. Relative luminance 0.053; OKLCH L 40.0% C 0.178 H 311.5°. Best body text is #FFFFFF at 10.15:1 contrast (WCAG AA passes).

Color values

HEX	#66188B
RGB	rgb(102, 24, 139)
HSL	hsl(281, 71%, 32%)
HSV	hsv(281, 83%, 55%)
CMYK	cmyk(26.6%, 82.7%, 0%, 45.5%)
CIE-LAB	lab(27.69, 51.34, -46.98)
CIE-LCH	lch(27.69, 69.59, 317.54°)
OKLab	oklab(39.99% 0.1177 -0.1332)
OKLCH	oklch(39.99% 0.178 311.5)
XYZ	xyz(10.4654, 5.3424, 24.9010)
Luminance	0.0534 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66188B #3D8B18

analogous

#2D188B #66188B #8B1877

triadic

#66188B #8B6618 #188B66

tetradic

#66188B #8B2D18 #3D8B18 #18778B

square

#66188B #8B2D18 #3D8B18 #18778B

split-complementary

#66188B #778B18 #188B2D

monochromatic

#190623 #400F57 #66188B #8C21BF #AB3FDE

Accessibility & contrast

On white

10.15

#66188B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#66188B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #66188B

10.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66188B	#FFFFFF	#000000	##FFFFFF
##66188B	1.00	10.15	2.07	10.15
#FFFFFF	10.15	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8E

Deuteranopia (green-blind)

#004389

Tritanopia (blue-blind)

#613552

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #66188b;
/* rgb */ color: rgb(102, 24, 139);
/* oklch */ color: oklch(40.0% 0.178 311.5);

Tailwind

colors: {
  custom: {
    50: '#9660ae',
    500: '#66188b',
    950: '#000000',
  },
}

SCSS

$custom: #66188b;
$custom-light: #9660ae;
$custom-dark: #000000;

JSON

{
  "hex": "#66188b",
  "rgb": {
    "r": 102,
    "g": 24,
    "b": 139
  },
  "hsl": {
    "h": 280.696,
    "s": 70.552,
    "l": 31.961
  },
  "oklch": {
    "l": 0.39993,
    "c": 0.17777,
    "h": 311.5
  },
  "luminance": 0.05342
}

Semantic roles & 50–950 ramp

primary

#66188B

secondary

#69BE40

accent

#ED3A74

background

#F9F6FA

surface

#F2EBF4

border

#CCC6CE

text

#0E0510

muted

#7E7A7F

Preview Lab

Preview with #66188B

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

Preview Lab → · Contrast checker → · Palette generator →