#661D8B#661D8B

#661D8B is a dark, vivid violet. Relative luminance 0.056; OKLCH L 40.4% C 0.173 H 311.1°. Best body text is #FFFFFF at 9.94:1 contrast (WCAG AA passes).

Color values

HEX	#661D8B
RGB	rgb(102, 29, 139)
HSL	hsl(280, 65%, 33%)
HSV	hsv(280, 79%, 55%)
CMYK	cmyk(26.6%, 79.1%, 0%, 45.5%)
CIE-LAB	lab(28.30, 49.58, -46.00)
CIE-LCH	lch(28.30, 67.63, 317.15°)
OKLab	oklab(40.42% 0.1135 -0.1303)
OKLCH	oklch(40.42% 0.173 311.1)
XYZ	xyz(10.5782, 5.5679, 24.9386)
Luminance	0.0557 (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

#661D8B #428B1D

analogous

#2F1D8B #661D8B #8B1D79

triadic

#661D8B #8B661D #1D8B66

tetradic

#661D8B #8B2F1D #428B1D #1D798B

square

#661D8B #8B2F1D #428B1D #1D798B

split-complementary

#661D8B #798B1D #1D8B2F

monochromatic

#1C0826 #411258 #661D8B #8B28BE #A949D9

Accessibility & contrast

On white

9.94

#661D8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#661D8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661D8B

9.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661D8B	#FFFFFF	#000000	##FFFFFF
##661D8B	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)

#00408E

Deuteranopia (green-blind)

#024489

Tritanopia (blue-blind)

#613854

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #661d8b;
/* rgb */ color: rgb(102, 29, 139);
/* oklch */ color: oklch(40.4% 0.173 311.1);

Tailwind

colors: {
  custom: {
    50: '#9662ae',
    500: '#661d8b',
    950: '#000000',
  },
}

SCSS

$custom: #661d8b;
$custom-light: #9662ae;
$custom-dark: #000000;

JSON

{
  "hex": "#661d8b",
  "rgb": {
    "r": 102,
    "g": 29,
    "b": 139
  },
  "hsl": {
    "h": 279.818,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.40418,
    "c": 0.17287,
    "h": 311.1
  },
  "luminance": 0.05568
}

Semantic roles & 50–950 ramp

primary

#661D8B

secondary

#6FBB49

accent

#E83F78

background

#F9F6FA

surface

#F2EBF4

border

#CCC6CE

text

#0E0610

muted

#7E7A7F

Preview Lab

Preview with #661D8B

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

Preview Lab → · Contrast checker → · Palette generator →