#661BB3#661BB3

#661BB3 is a dark, highly saturated violet. Relative luminance 0.069; OKLCH L 43.7% C 0.213 H 299.0°. Best body text is #FFFFFF at 8.85:1 contrast (WCAG AA passes).

Color values

HEX	#661BB3
RGB	rgb(102, 27, 179)
HSL	hsl(270, 74%, 40%)
HSV	hsv(270, 85%, 70%)
CMYK	cmyk(43%, 84.9%, 0%, 29.8%)
CIE-LAB	lab(31.49, 59.38, -65.11)
CIE-LCH	lch(31.49, 88.12, 312.37°)
OKLab	oklab(43.7% 0.1032 -0.1864)
OKLCH	oklch(43.7% 0.213 299)
XYZ	xyz(14.0060, 6.8631, 43.2259)
Luminance	0.0686 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661BB3 #68B31B

analogous

#1B1CB3 #661BB3 #B21BB3

triadic

#661BB3 #B3661B #1BB366

tetradic

#661BB3 #B31B1C #68B31B #1BB3B2

square

#661BB3 #B31B1C #68B31B #1BB3B2

split-complementary

#661BB3 #B3B21B #1CB31B

monochromatic

#290B49 #48137E #661BB3 #842CDF #A361E7

Accessibility & contrast

On white

8.85

#661BB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#661BB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661BB3

8.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661BB3	#FFFFFF	#000000	##FFFFFF
##661BB3	1.00	8.85	2.37	8.85
#FFFFFF	8.85	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AB7

Deuteranopia (green-blind)

#0049B0

Tritanopia (blue-blind)

#52496A

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #661bb3;
/* rgb */ color: rgb(102, 27, 179);
/* oklch */ color: oklch(43.7% 0.213 299.0);

Tailwind

colors: {
  custom: {
    50: '#9a64cb',
    500: '#661bb3',
    950: '#000000',
  },
}

SCSS

$custom: #661bb3;
$custom-light: #9a64cb;
$custom-dark: #000000;

JSON

{
  "hex": "#661bb3",
  "rgb": {
    "r": 102,
    "g": 27,
    "b": 179
  },
  "hsl": {
    "h": 269.605,
    "s": 73.786,
    "l": 40.392
  },
  "oklch": {
    "l": 0.43699,
    "c": 0.21311,
    "h": 299
  },
  "luminance": 0.06863
}

Semantic roles & 50–950 ramp

primary

#661BB3

secondary

#96CC5E

accent

#F03795

background

#FAF6FC

surface

#F3EBF9

border

#CDC6D2

text

#0F0613

muted

#7F7A82

Preview Lab

Preview with #661BB3

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

Preview Lab → · Contrast checker → · Palette generator →