#661B78#661B78

#661B78 is a dark, vivid purple. Relative luminance 0.050; OKLCH L 38.8% C 0.157 H 319.0°. Best body text is #FFFFFF at 10.54:1 contrast (WCAG AA passes).

Color values

HEX	#661B78
RGB	rgb(102, 27, 120)
HSL	hsl(288, 63%, 29%)
HSV	hsv(288, 78%, 47%)
CMYK	cmyk(15%, 77.5%, 0%, 52.9%)
CIE-LAB	lab(26.64, 46.31, -36.73)
CIE-LCH	lch(26.64, 59.11, 321.58°)
OKLab	oklab(38.8% 0.1185 -0.1031)
OKLCH	oklch(38.8% 0.157 319)
XYZ	xyz(9.2611, 4.9652, 18.2362)
Luminance	0.0496 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661B78 #2D781B

analogous

#381B78 #661B78 #781B5C

triadic

#661B78 #78661B #1B7866

tetradic

#661B78 #78381B #2D781B #1B5C78

square

#661B78 #78381B #2D781B #1B5C78

split-complementary

#661B78 #5C781B #1B7838

monochromatic

#150619 #3C1046 #661B78 #9026AA #B53BD3

Accessibility & contrast

On white

10.54

#661B78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#661B78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661B78

10.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661B78	#FFFFFF	#000000	##FFFFFF
##661B78	1.00	10.54	1.99	10.54
#FFFFFF	10.54	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A7B

Deuteranopia (green-blind)

#214176

Tritanopia (blue-blind)

#662E48

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #661b78;
/* rgb */ color: rgb(102, 27, 120);
/* oklch */ color: oklch(38.8% 0.157 319.0);

Tailwind

colors: {
  custom: {
    50: '#95609f',
    500: '#661b78',
    950: '#000000',
  },
}

SCSS

$custom: #661b78;
$custom-light: #95609f;
$custom-dark: #000000;

JSON

{
  "hex": "#661b78",
  "rgb": {
    "r": 102,
    "g": 27,
    "b": 120
  },
  "hsl": {
    "h": 288.387,
    "s": 63.265,
    "l": 28.824
  },
  "oklch": {
    "l": 0.38803,
    "c": 0.15711,
    "h": 319
  },
  "luminance": 0.04965
}

Semantic roles & 50–950 ramp

primary

#661B78

secondary

#57AC43

accent

#E64161

background

#F9F5F9

surface

#F2EAF2

border

#CCC6CC

text

#0E050E

muted

#7E797E

Preview Lab

Preview with #661B78

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

Preview Lab → · Contrast checker → · Palette generator →