#661B8E#661B8E

#661B8E is a dark, vivid violet. Relative luminance 0.056; OKLCH L 40.5% C 0.178 H 310.1°. Best body text is #FFFFFF at 9.94:1 contrast (WCAG AA passes).

Color values

HEX	#661B8E
RGB	rgb(102, 27, 142)
HSL	hsl(279, 68%, 33%)
HSV	hsv(279, 81%, 56%)
CMYK	cmyk(28.2%, 81%, 0%, 44.3%)
CIE-LAB	lab(28.28, 50.97, -47.88)
CIE-LCH	lch(28.28, 69.93, 316.79°)
OKLab	oklab(40.48% 0.1146 -0.1359)
OKLCH	oklch(40.48% 0.178 310.1)
XYZ	xyz(10.7529, 5.5619, 26.0930)
Luminance	0.0556 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661B8E #438E1B

analogous

#2C1B8E #661B8E #8E1B7C

triadic

#661B8E #8E661B #1B8E66

tetradic

#661B8E #8E2C1B #438E1B #1B7C8E

square

#661B8E #8E2C1B #438E1B #1B7C8E

split-complementary

#661B8E #7C8E1B #1B8E2C

monochromatic

#1C0727 #41115B #661B8E #8B25C1 #A847DC

Accessibility & contrast

On white

9.94

#661B8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#661B8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661B8E

9.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661B8E	#FFFFFF	#000000	##FFFFFF
##661B8E	1.00	9.94	2.11	9.94
#FFFFFF	9.94	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004091

Deuteranopia (green-blind)

#00448C

Tritanopia (blue-blind)

#603855

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #661b8e;
/* rgb */ color: rgb(102, 27, 142);
/* oklch */ color: oklch(40.5% 0.178 310.1);

Tailwind

colors: {
  custom: {
    50: '#9661b0',
    500: '#661b8e',
    950: '#000000',
  },
}

SCSS

$custom: #661b8e;
$custom-light: #9661b0;
$custom-dark: #000000;

JSON

{
  "hex": "#661b8e",
  "rgb": {
    "r": 102,
    "g": 27,
    "b": 142
  },
  "hsl": {
    "h": 279.13,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.4048,
    "c": 0.17775,
    "h": 310.1
  },
  "luminance": 0.05562
}

Semantic roles & 50–950 ramp

primary

#661B8E

secondary

#70BE47

accent

#EB3D79

background

#F9F6FA

surface

#F2EBF5

border

#CCC6CF

text

#0E0511

muted

#7E7A80

Preview Lab

Preview with #661B8E

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

Preview Lab → · Contrast checker → · Palette generator →