#661C91#661C91

#661C91 is a dark, vivid violet. Relative luminance 0.057; OKLCH L 40.8% C 0.180 H 309.0°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#661C91
RGB	rgb(102, 28, 145)
HSL	hsl(278, 68%, 34%)
HSV	hsv(278, 81%, 57%)
CMYK	cmyk(29.7%, 80.7%, 0%, 43.1%)
CIE-LAB	lab(28.64, 51.27, -49.15)
CIE-LCH	lch(28.64, 71.03, 316.21°)
OKLab	oklab(40.81% 0.1131 -0.1396)
OKLCH	oklch(40.81% 0.18 309)
XYZ	xyz(11.0045, 5.6998, 27.3030)
Luminance	0.0570 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661C91 #47911C

analogous

#2C1C91 #661C91 #911C82

triadic

#661C91 #91661C #1C9166

tetradic

#661C91 #912C1C #47911C #1C8291

square

#661C91 #912C1C #47911C #1C8291

split-complementary

#661C91 #82911C #1C912C

monochromatic

#1E082A #42125E #661C91 #8A26C4 #A74BDC

Accessibility & contrast

On white

9.81

#661C91 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#661C91 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661C91

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661C91	#FFFFFF	#000000	##FFFFFF
##661C91	1.00	9.81	2.14	9.81
#FFFFFF	9.81	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004194

Deuteranopia (green-blind)

#00448F

Tritanopia (blue-blind)

#5F3A57

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #661c91;
/* rgb */ color: rgb(102, 28, 145);
/* oklch */ color: oklch(40.8% 0.180 309.0);

Tailwind

colors: {
  custom: {
    50: '#9662b2',
    500: '#661c91',
    950: '#000000',
  },
}

SCSS

$custom: #661c91;
$custom-light: #9662b2;
$custom-dark: #000000;

JSON

{
  "hex": "#661c91",
  "rgb": {
    "r": 102,
    "g": 28,
    "b": 145
  },
  "hsl": {
    "h": 277.949,
    "s": 67.63,
    "l": 33.922
  },
  "oklch": {
    "l": 0.4081,
    "c": 0.17964,
    "h": 309
  },
  "luminance": 0.057
}

Semantic roles & 50–950 ramp

primary

#661C91

secondary

#75BE4A

accent

#EB3D7D

background

#F9F6FB

surface

#F2EBF6

border

#CCC6D0

text

#0E0611

muted

#7E7A80

Preview Lab

Preview with #661C91

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

Preview Lab → · Contrast checker → · Palette generator →