#661B9D#661B9D

#661B9D is a dark, vivid violet. Relative luminance 0.060; OKLCH L 41.7% C 0.192 H 305.1°. Best body text is #FFFFFF at 9.51:1 contrast (WCAG AA passes).

Color values

HEX	#661B9D
RGB	rgb(102, 27, 157)
HSL	hsl(275, 71%, 36%)
HSV	hsv(275, 83%, 62%)
CMYK	cmyk(35%, 82.8%, 0%, 38.4%)
CIE-LAB	lab(29.52, 54.31, -55.08)
CIE-LCH	lch(29.52, 77.35, 314.60°)
OKLab	oklab(41.73% 0.1106 -0.157)
OKLCH	oklch(41.73% 0.192 305.1)
XYZ	xyz(11.9558, 6.0430, 32.4283)
Luminance	0.0604 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661B9D #529D1B

analogous

#251B9D #661B9D #9D1B93

triadic

#661B9D #9D661B #1B9D66

tetradic

#661B9D #9D251B #529D1B #1B939D

square

#661B9D #9D251B #529D1B #1B939D

split-complementary

#661B9D #939D1B #1B9D25

monochromatic

#220935 #441269 #661B9D #8824D1 #A451E1

Accessibility & contrast

On white

9.51

#661B9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#661B9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661B9D

9.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661B9D	#FFFFFF	#000000	##FFFFFF
##661B9D	1.00	9.51	2.21	9.51
#FFFFFF	9.51	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044A0

Deuteranopia (green-blind)

#00469B

Tritanopia (blue-blind)

#5B3F5D

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #661b9d;
/* rgb */ color: rgb(102, 27, 157);
/* oklch */ color: oklch(41.7% 0.192 305.1);

Tailwind

colors: {
  custom: {
    50: '#9762bb',
    500: '#661b9d',
    950: '#000000',
  },
}

SCSS

$custom: #661b9d;
$custom-light: #9762bb;
$custom-dark: #000000;

JSON

{
  "hex": "#661b9d",
  "rgb": {
    "r": 102,
    "g": 27,
    "b": 157
  },
  "hsl": {
    "h": 274.615,
    "s": 70.652,
    "l": 36.078
  },
  "oklch": {
    "l": 0.41733,
    "c": 0.19203,
    "h": 305.1
  },
  "luminance": 0.06043
}

Semantic roles & 50–950 ramp

primary

#661B9D

secondary

#81C450

accent

#ED3A86

background

#F9F6FB

surface

#F2EBF6

border

#CCC6D0

text

#0E0612

muted

#7E7A81

Preview Lab

Preview with #661B9D

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

Preview Lab → · Contrast checker → · Palette generator →