#551D8D#551D8D

#551D8D is a dark, vivid violet. Relative luminance 0.047; OKLCH L 38.3% C 0.171 H 301.1°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).

Color values

HEX	#551D8D
RGB	rgb(85, 29, 141)
HSL	hsl(270, 66%, 33%)
HSV	hsv(270, 79%, 55%)
CMYK	cmyk(39.7%, 79.4%, 0%, 44.7%)
CIE-LAB	lab(25.96, 46.97, -51.15)
CIE-LCH	lch(25.96, 69.44, 312.56°)
OKLab	oklab(38.31% 0.0882 -0.1461)
OKLCH	oklch(38.31% 0.171 301.1)
XYZ	xyz(8.9922, 4.7330, 25.6340)
Luminance	0.0473 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551D8D #558D1D

analogous

#1D1D8D #551D8D #8D1D8D

triadic

#551D8D #8D551D #1D8D55

tetradic

#551D8D #8D1D1D #558D1D #1D8D8D

square

#551D8D #8D1D1D #558D1D #1D8D8D

split-complementary

#551D8D #8D8D1D #1D8D1D

monochromatic

#180827 #36135A #551D8D #7427C0 #924BDA

Accessibility & contrast

On white

10.79

#551D8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#551D8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551D8D

10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551D8D	#FFFFFF	#000000	##FFFFFF
##551D8D	1.00	10.79	1.95	10.79
#FFFFFF	10.79	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D90

Deuteranopia (green-blind)

#003D8B

Tritanopia (blue-blind)

#483B55

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #551d8d;
/* rgb */ color: rgb(85, 29, 141);
/* oklch */ color: oklch(38.3% 0.171 301.1);

Tailwind

colors: {
  custom: {
    50: '#8b60af',
    500: '#551d8d',
    950: '#000000',
  },
}

SCSS

$custom: #551d8d;
$custom-light: #8b60af;
$custom-dark: #000000;

JSON

{
  "hex": "#551d8d",
  "rgb": {
    "r": 85,
    "g": 29,
    "b": 141
  },
  "hsl": {
    "h": 270,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.38307,
    "c": 0.17068,
    "h": 301.1
  },
  "luminance": 0.04733
}

Semantic roles & 50–950 ramp

primary

#551D8D

secondary

#83BC4A

accent

#E93F94

background

#F8F5FA

surface

#F0EAF5

border

#CBC6CF

text

#0C0510

muted

#7D797F

Preview Lab

Preview with #551D8D

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

Preview Lab → · Contrast checker → · Palette generator →