#661C8E#661C8E

#661C8E is a dark, vivid violet. Relative luminance 0.056; OKLCH L 40.6% C 0.177 H 310.1°. Best body text is #FFFFFF at 9.90:1 contrast (WCAG AA passes).

Color values

HEX	#661C8E
RGB	rgb(102, 28, 142)
HSL	hsl(279, 67%, 33%)
HSV	hsv(279, 80%, 56%)
CMYK	cmyk(28.2%, 80.3%, 0%, 44.3%)
CIE-LAB	lab(28.40, 50.61, -47.68)
CIE-LCH	lch(28.40, 69.53, 316.70°)
OKLab	oklab(40.57% 0.1138 -0.1353)
OKLCH	oklch(40.57% 0.177 310.1)
XYZ	xyz(10.7763, 5.6085, 26.1008)
Luminance	0.0561 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

#4B006E

ΔE00 7.26

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#661C8E #448E1C

analogous

#2D1C8E #661C8E #8E1C7D

triadic

#661C8E #8E661C #1C8E66

tetradic

#661C8E #8E2D1C #448E1C #1C7D8E

square

#661C8E #8E2D1C #448E1C #1C7D8E

split-complementary

#661C8E #7D8E1C #1C8E2D

monochromatic

#1D0828 #41125B #661C8E #8B26C1 #A849DB

Accessibility & contrast

On white

9.90

#661C8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#661C8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #661C8E

9.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##661C8E	#FFFFFF	#000000	##FFFFFF
##661C8E	1.00	9.90	2.12	9.90
#FFFFFF	9.90	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004091

Deuteranopia (green-blind)

#00448C

Tritanopia (blue-blind)

#603955

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #661c8e;
/* rgb */ color: rgb(102, 28, 142);
/* oklch */ color: oklch(40.6% 0.177 310.1);

Tailwind

colors: {
  custom: {
    50: '#9662b0',
    500: '#661c8e',
    950: '#000000',
  },
}

SCSS

$custom: #661c8e;
$custom-light: #9662b0;
$custom-dark: #000000;

JSON

{
  "hex": "#661c8e",
  "rgb": {
    "r": 102,
    "g": 28,
    "b": 142
  },
  "hsl": {
    "h": 278.947,
    "s": 67.059,
    "l": 33.333
  },
  "oklch": {
    "l": 0.40567,
    "c": 0.17677,
    "h": 310.1
  },
  "luminance": 0.05608
}

Semantic roles & 50–950 ramp

primary

#661C8E

secondary

#72BD49

accent

#EA3E7A

background

#F9F6FA

surface

#F2EBF5

border

#CCC6CF

text

#0E0510

muted

#7E7A7F

Preview Lab

Preview with #661C8E

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

Preview Lab → · Contrast checker → · Palette generator →