#551B83#551B83

#551B83 is a dark, vivid violet. Relative luminance 0.044; OKLCH L 37.2% C 0.162 H 304.8°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#551B83
RGB	rgb(85, 27, 131)
HSL	hsl(273, 66%, 31%)
HSV	hsv(273, 79%, 51%)
CMYK	cmyk(35.1%, 79.4%, 0%, 48.6%)
CIE-LAB	lab(24.81, 45.34, -46.78)
CIE-LCH	lch(24.81, 65.14, 314.11°)
OKLab	oklab(37.23% 0.0927 -0.1332)
OKLCH	oklch(37.23% 0.162 304.8)
XYZ	xyz(8.2340, 4.3539, 21.8749)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 3.79

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B83 #49831B

analogous

#211B83 #551B83 #831B7D

triadic

#551B83 #83551B #1B8355

tetradic

#551B83 #83211B #49831B #1B7D83

square

#551B83 #83211B #49831B #1B7D83

split-complementary

#551B83 #7D831B #1B8321

monochromatic

#13061E #341150 #551B83 #7625B6 #9541D8

Accessibility & contrast

On white

11.23

#551B83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#551B83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B83

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B83	#FFFFFF	#000000	##FFFFFF
##551B83	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003986

Deuteranopia (green-blind)

#003B81

Tritanopia (blue-blind)

#4C364E

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #551b83;
/* rgb */ color: rgb(85, 27, 131);
/* oklch */ color: oklch(37.2% 0.162 304.8);

Tailwind

colors: {
  custom: {
    50: '#8a5ea8',
    500: '#551b83',
    950: '#000000',
  },
}

SCSS

$custom: #551b83;
$custom-light: #8a5ea8;
$custom-dark: #000000;

JSON

{
  "hex": "#551b83",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 131
  },
  "hsl": {
    "h": 273.462,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.37232,
    "c": 0.16231,
    "h": 304.8
  },
  "luminance": 0.04354
}

Semantic roles & 50–950 ramp

primary

#551B83

secondary

#76B643

accent

#E93F8A

background

#F8F5FA

surface

#F0E9F4

border

#CBC5CE

text

#0C0510

muted

#7D797F

Preview Lab

Preview with #551B83

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

Preview Lab → · Contrast checker → · Palette generator →