#551B73#551B73

#551B73 is a dark, vivid violet. Relative luminance 0.040; OKLCH L 35.9% C 0.146 H 311.3°. Best body text is #FFFFFF at 11.73:1 contrast (WCAG AA passes).

Color values

HEX	#551B73
RGB	rgb(85, 27, 115)
HSL	hsl(280, 62%, 28%)
HSV	hsv(280, 77%, 45%)
CMYK	cmyk(26.1%, 76.5%, 0%, 54.9%)
CIE-LAB	lab(23.52, 41.55, -38.71)
CIE-LCH	lch(23.52, 56.79, 317.03°)
OKLab	oklab(35.92% 0.0961 -0.1095)
OKLCH	oklch(35.92% 0.146 311.3)
XYZ	xyz(7.2322, 3.9531, 16.5984)
Luminance	0.0395 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B73 #39731B

analogous

#291B73 #551B73 #731B65

triadic

#551B73 #73551B #1B7355

tetradic

#551B73 #73291B #39731B #1B6573

square

#551B73 #73291B #39731B #1B6573

split-complementary

#551B73 #65731B #1B7329

monochromatic

#120619 #300F41 #551B73 #7A27A5 #9C38D0

Accessibility & contrast

On white

11.73

#551B73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#551B73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B73

11.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B73	#FFFFFF	#000000	##FFFFFF
##551B73	1.00	11.73	1.79	11.73
#FFFFFF	11.73	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003575

Deuteranopia (green-blind)

#0C3971

Tritanopia (blue-blind)

#512F45

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #551b73;
/* rgb */ color: rgb(85, 27, 115);
/* oklch */ color: oklch(35.9% 0.146 311.3);

Tailwind

colors: {
  custom: {
    50: '#885e9c',
    500: '#551b73',
    950: '#000000',
  },
}

SCSS

$custom: #551b73;
$custom-light: #885e9c;
$custom-dark: #000000;

JSON

{
  "hex": "#551b73",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 115
  },
  "hsl": {
    "h": 279.545,
    "s": 61.972,
    "l": 27.843
  },
  "oklch": {
    "l": 0.35916,
    "c": 0.14569,
    "h": 311.3
  },
  "luminance": 0.03953
}

Semantic roles & 50–950 ramp

primary

#551B73

secondary

#65A842

accent

#E5437A

background

#F8F5F9

surface

#F0E9F2

border

#CBC5CC

text

#0C050E

muted

#7D797E

Preview Lab

Preview with #551B73

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

Preview Lab → · Contrast checker → · Palette generator →