#661C8D#661C8D

#661C8D is a dark, vivid violet. Relative luminance 0.056; OKLCH L 40.5% C 0.176 H 310.4°. Best body text is #FFFFFF at 9.93:1 contrast (WCAG AA passes).

Color values

HEX	#661C8D
RGB	rgb(102, 28, 141)
HSL	hsl(279, 67%, 33%)
HSV	hsv(279, 80%, 55%)
CMYK	cmyk(27.7%, 80.1%, 0%, 44.7%)
CIE-LAB	lab(28.32, 50.39, -47.19)
CIE-LCH	lch(28.32, 69.04, 316.88°)
OKLab	oklab(40.49% 0.114 -0.1338)
OKLCH	oklch(40.49% 0.176 310.4)
XYZ	xyz(10.7015, 5.5786, 25.7072)
Luminance	0.0558 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

#4B006E

ΔE00 7.17

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661C8D #438D1C

analogous

#2D1C8D #661C8D #8D1C7B

triadic

#661C8D #8D661C #1C8D66

tetradic

#661C8D #8D2D1C #438D1C #1C7B8D

square

#661C8D #8D2D1C #438D1C #1C7B8D

split-complementary

#661C8D #7B8D1C #1C8D2D

monochromatic

#1C0827 #41125A #661C8D #8B26C0 #A849DB

Accessibility & contrast

On white

9.93

#661C8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#661C8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661C8D

9.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661C8D	#FFFFFF	#000000	##FFFFFF
##661C8D	1.00	9.93	2.12	9.93
#FFFFFF	9.93	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004090

Deuteranopia (green-blind)

#00448B

Tritanopia (blue-blind)

#613854

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #661c8d;
/* rgb */ color: rgb(102, 28, 141);
/* oklch */ color: oklch(40.5% 0.176 310.4);

Tailwind

colors: {
  custom: {
    50: '#9662af',
    500: '#661c8d',
    950: '#000000',
  },
}

SCSS

$custom: #661c8d;
$custom-light: #9662af;
$custom-dark: #000000;

JSON

{
  "hex": "#661c8d",
  "rgb": {
    "r": 102,
    "g": 28,
    "b": 141
  },
  "hsl": {
    "h": 279.292,
    "s": 66.864,
    "l": 33.137
  },
  "oklch": {
    "l": 0.40487,
    "c": 0.1758,
    "h": 310.4
  },
  "luminance": 0.05578
}

Semantic roles & 50–950 ramp

primary

#661C8D

secondary

#70BD48

accent

#EA3E79

background

#F9F6FA

surface

#F2EBF5

border

#CCC6CF

text

#0E0510

muted

#7E7A7F

Preview Lab

Preview with #661C8D

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

Preview Lab → · Contrast checker → · Palette generator →