#661B8D#661B8D

#661B8D is a dark, vivid violet. Relative luminance 0.055; OKLCH L 40.4% C 0.177 H 310.5°. Best body text is #FFFFFF at 9.97:1 contrast (WCAG AA passes).

Color values

HEX	#661B8D
RGB	rgb(102, 27, 141)
HSL	hsl(279, 68%, 33%)
HSV	hsv(279, 81%, 55%)
CMYK	cmyk(27.7%, 80.9%, 0%, 44.7%)
CIE-LAB	lab(28.20, 50.75, -47.39)
CIE-LCH	lch(28.20, 69.44, 316.96°)
OKLab	oklab(40.4% 0.1148 -0.1344)
OKLCH	oklch(40.4% 0.177 310.5)
XYZ	xyz(10.6782, 5.5320, 25.6994)
Luminance	0.0553 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

#4B006E

ΔE00 7.10

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661B8D #428D1B

analogous

#2D1B8D #661B8D #8D1B7B

triadic

#661B8D #8D661B #1B8D66

tetradic

#661B8D #8D2D1B #428D1B #1B7B8D

square

#661B8D #8D2D1B #428D1B #1B7B8D

split-complementary

#661B8D #7B8D1B #1B8D2D

monochromatic

#1C0726 #41115A #661B8D #8B25C0 #A947DC

Accessibility & contrast

On white

9.97

#661B8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#661B8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661B8D

9.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661B8D	#FFFFFF	#000000	##FFFFFF
##661B8D	1.00	9.97	2.11	9.97
#FFFFFF	9.97	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F90

Deuteranopia (green-blind)

#00448B

Tritanopia (blue-blind)

#613854

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #661b8d;
/* rgb */ color: rgb(102, 27, 141);
/* oklch */ color: oklch(40.4% 0.177 310.5);

Tailwind

colors: {
  custom: {
    50: '#9661af',
    500: '#661b8d',
    950: '#000000',
  },
}

SCSS

$custom: #661b8d;
$custom-light: #9661af;
$custom-dark: #000000;

JSON

{
  "hex": "#661b8d",
  "rgb": {
    "r": 102,
    "g": 27,
    "b": 141
  },
  "hsl": {
    "h": 279.474,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.404,
    "c": 0.17681,
    "h": 310.5
  },
  "luminance": 0.05532
}

Semantic roles & 50–950 ramp

primary

#661B8D

secondary

#6FBD46

accent

#EB3D78

background

#F9F6FA

surface

#F2EBF5

border

#CCC6CF

text

#0E0510

muted

#7E7A7F

Preview Lab

Preview with #661B8D

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

Preview Lab → · Contrast checker → · Palette generator →