#661B8A#661B8A

#661B8A is a dark, vivid purple. Relative luminance 0.054; OKLCH L 40.2% C 0.174 H 311.6°. Best body text is #FFFFFF at 10.05:1 contrast (WCAG AA passes).

Color values

HEX	#661B8A
RGB	rgb(102, 27, 138)
HSL	hsl(281, 67%, 32%)
HSV	hsv(281, 80%, 54%)
CMYK	cmyk(26.1%, 80.4%, 0%, 45.9%)
CIE-LAB	lab(27.96, 50.09, -45.91)
CIE-LCH	lch(27.96, 67.95, 317.49°)
OKLab	oklab(40.16% 0.1155 -0.1301)
OKLCH	oklch(40.16% 0.174 311.6)
XYZ	xyz(10.4580, 5.4439, 24.5397)
Luminance	0.0544 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Royal Purple (survey)

#4B006E

ΔE00 6.86

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661B8A #3F8A1B

analogous

#2F1B8A #661B8A #8A1B76

triadic

#661B8A #8A661B #1B8A66

tetradic

#661B8A #8A2F1B #3F8A1B #1B768A

square

#661B8A #8A2F1B #3F8A1B #1B768A

split-complementary

#661B8A #768A1B #1B8A2F

monochromatic

#1A0724 #401157 #661B8A #8C25BD #AA45DB

Accessibility & contrast

On white

10.05

#661B8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#661B8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661B8A

10.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661B8A	#FFFFFF	#000000	##FFFFFF
##661B8A	1.00	10.05	2.09	10.05
#FFFFFF	10.05	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8D

Deuteranopia (green-blind)

#014388

Tritanopia (blue-blind)

#613653

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #661b8a;
/* rgb */ color: rgb(102, 27, 138);
/* oklch */ color: oklch(40.2% 0.174 311.6);

Tailwind

colors: {
  custom: {
    50: '#9661ad',
    500: '#661b8a',
    950: '#000000',
  },
}

SCSS

$custom: #661b8a;
$custom-light: #9661ad;
$custom-dark: #000000;

JSON

{
  "hex": "#661b8a",
  "rgb": {
    "r": 102,
    "g": 27,
    "b": 138
  },
  "hsl": {
    "h": 280.541,
    "s": 67.273,
    "l": 32.353
  },
  "oklch": {
    "l": 0.4016,
    "c": 0.17396,
    "h": 311.6
  },
  "luminance": 0.05444
}

Semantic roles & 50–950 ramp

primary

#661B8A

secondary

#6BBC45

accent

#EA3E76

background

#F9F6FA

surface

#F2EBF4

border

#CCC6CE

text

#0E0510

muted

#7E7A7F

Preview Lab

Preview with #661B8A

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

Preview Lab → · Contrast checker → · Palette generator →