#661B81#661B81

#661B81 is a dark, vivid purple. Relative luminance 0.052; OKLCH L 39.5% C 0.165 H 315.1°. Best body text is #FFFFFF at 10.30:1 contrast (WCAG AA passes).

Color values

HEX	#661B81
RGB	rgb(102, 27, 129)
HSL	hsl(284, 65%, 31%)
HSV	hsv(284, 79%, 51%)
CMYK	cmyk(20.9%, 79.1%, 0%, 49.4%)
CIE-LAB	lab(27.28, 48.17, -41.39)
CIE-LCH	lch(27.28, 63.51, 319.33°)
OKLab	oklab(39.46% 0.1173 -0.1168)
OKLCH	oklch(39.46% 0.165 315.1)
XYZ	xyz(9.8332, 5.1940, 21.2492)
Luminance	0.0519 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661B81 #36811B

analogous

#331B81 #661B81 #811B69

triadic

#661B81 #81661B #1B8166

tetradic

#661B81 #81331B #36811B #1B6981

square

#661B81 #81331B #36811B #1B6981

split-complementary

#661B81 #69811B #1B8133

monochromatic

#16061C #3E104E #661B81 #8E26B4 #AF3FD7

Accessibility & contrast

On white

10.30

#661B81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#661B81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661B81

10.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661B81	#FFFFFF	#000000	##FFFFFF
##661B81	1.00	10.30	2.04	10.30
#FFFFFF	10.30	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C84

Deuteranopia (green-blind)

#16427F

Tritanopia (blue-blind)

#64324D

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #661b81;
/* rgb */ color: rgb(102, 27, 129);
/* oklch */ color: oklch(39.5% 0.165 315.1);

Tailwind

colors: {
  custom: {
    50: '#9561a6',
    500: '#661b81',
    950: '#000000',
  },
}

SCSS

$custom: #661b81;
$custom-light: #9561a6;
$custom-dark: #000000;

JSON

{
  "hex": "#661b81",
  "rgb": {
    "r": 102,
    "g": 27,
    "b": 129
  },
  "hsl": {
    "h": 284.118,
    "s": 65.385,
    "l": 30.588
  },
  "oklch": {
    "l": 0.39464,
    "c": 0.16549,
    "h": 315.1
  },
  "luminance": 0.05194
}

Semantic roles & 50–950 ramp

primary

#661B81

secondary

#61B543

accent

#E83F6C

background

#F9F6FA

surface

#F2EBF4

border

#CCC6CE

text

#0E050F

muted

#7E7A7F

Preview Lab

Preview with #661B81

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

Preview Lab → · Contrast checker → · Palette generator →