#551B84#551B84

#551B84 is a dark, vivid violet. Relative luminance 0.044; OKLCH L 37.3% C 0.163 H 304.5°. Best body text is #FFFFFF at 11.19:1 contrast (WCAG AA passes).

Color values

HEX	#551B84
RGB	rgb(85, 27, 132)
HSL	hsl(273, 66%, 31%)
HSV	hsv(273, 80%, 52%)
CMYK	cmyk(35.6%, 79.5%, 0%, 48.2%)
CIE-LAB	lab(24.89, 45.58, -47.27)
CIE-LCH	lch(24.89, 65.67, 313.96°)
OKLab	oklab(37.32% 0.0924 -0.1347)
OKLCH	oklch(37.32% 0.163 304.5)
XYZ	xyz(8.3021, 4.3811, 22.2336)
Luminance	0.0438 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 3.77

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B84 #4A841B

analogous

#201B84 #551B84 #841B7E

triadic

#551B84 #84551B #1B8455

tetradic

#551B84 #84201B #4A841B #1B7E84

square

#551B84 #84201B #4A841B #1B7E84

split-complementary

#551B84 #7E841B #1B8420

monochromatic

#14061E #341151 #551B84 #7625B7 #9541D8

Accessibility & contrast

On white

11.19

#551B84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#551B84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B84

11.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B84	#FFFFFF	#000000	##FFFFFF
##551B84	1.00	11.19	1.88	11.19
#FFFFFF	11.19	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A87

Deuteranopia (green-blind)

#003B82

Tritanopia (blue-blind)

#4C364F

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #551b84;
/* rgb */ color: rgb(85, 27, 132);
/* oklch */ color: oklch(37.3% 0.163 304.5);

Tailwind

colors: {
  custom: {
    50: '#8a5fa9',
    500: '#551b84',
    950: '#000000',
  },
}

SCSS

$custom: #551b84;
$custom-light: #8a5fa9;
$custom-dark: #000000;

JSON

{
  "hex": "#551b84",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 132
  },
  "hsl": {
    "h": 273.143,
    "s": 66.038,
    "l": 31.176
  },
  "oklch": {
    "l": 0.37318,
    "c": 0.16335,
    "h": 304.5
  },
  "luminance": 0.04381
}

Semantic roles & 50–950 ramp

primary

#551B84

secondary

#77B743

accent

#E93F8B

background

#F8F5FA

surface

#F0E9F4

border

#CBC5CE

text

#0C0510

muted

#7D797F

Preview Lab

Preview with #551B84

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

Preview Lab → · Contrast checker → · Palette generator →