#66198B#66198B

#66198B is a dark, vivid purple. Relative luminance 0.054; OKLCH L 40.1% C 0.177 H 311.4°. Best body text is #FFFFFF at 10.11:1 contrast (WCAG AA passes).

Color values

HEX	#66198B
RGB	rgb(102, 25, 139)
HSL	hsl(281, 70%, 32%)
HSV	hsv(281, 82%, 55%)
CMYK	cmyk(26.6%, 82%, 0%, 45.5%)
CIE-LAB	lab(27.80, 51.00, -46.80)
CIE-LCH	lch(27.80, 69.22, 317.46°)
OKLab	oklab(40.07% 0.1169 -0.1327)
OKLCH	oklch(40.07% 0.177 311.4)
XYZ	xyz(10.4864, 5.3844, 24.9080)
Luminance	0.0538 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66198B #3E8B19

analogous

#2D198B #66198B #8B1977

triadic

#66198B #8B6619 #198B66

tetradic

#66198B #8B2D19 #3E8B19 #19778B

square

#66198B #8B2D19 #3E8B19 #19778B

split-complementary

#66198B #778B19 #198B2D

monochromatic

#1A0623 #401057 #66198B #8C22BF #AA41DD

Accessibility & contrast

On white

10.11

#66198B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#66198B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #66198B

10.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66198B	#FFFFFF	#000000	##FFFFFF
##66198B	1.00	10.11	2.08	10.11
#FFFFFF	10.11	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8E

Deuteranopia (green-blind)

#004389

Tritanopia (blue-blind)

#613653

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #66198b;
/* rgb */ color: rgb(102, 25, 139);
/* oklch */ color: oklch(40.1% 0.177 311.4);

Tailwind

colors: {
  custom: {
    50: '#9660ae',
    500: '#66198b',
    950: '#000000',
  },
}

SCSS

$custom: #66198b;
$custom-light: #9660ae;
$custom-dark: #000000;

JSON

{
  "hex": "#66198b",
  "rgb": {
    "r": 102,
    "g": 25,
    "b": 139
  },
  "hsl": {
    "h": 280.526,
    "s": 69.512,
    "l": 32.157
  },
  "oklch": {
    "l": 0.40072,
    "c": 0.17684,
    "h": 311.4
  },
  "luminance": 0.05384
}

Semantic roles & 50–950 ramp

primary

#66198B

secondary

#6ABE42

accent

#EC3B75

background

#F9F6FA

surface

#F2EBF4

border

#CCC6CE

text

#0E0510

muted

#7E7A7F

Preview Lab

Preview with #66198B

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

Preview Lab → · Contrast checker → · Palette generator →