#551B4D#551B4D

#551B4D is a dark, moderate purple. Relative luminance 0.033; OKLCH L 33.3% C 0.108 H 333.6°. Best body text is #FFFFFF at 12.73:1 contrast (WCAG AA passes).

Color values

HEX#551B4D
RGBrgb(85, 27, 77)
HSLhsl(308, 52%, 22%)
HSVhsv(308, 68%, 33%)
CMYKcmyk(0%, 68.2%, 9.4%, 66.7%)
CIE-LABlab(21.02, 33.55, -17.63)
CIE-LCHlch(21.02, 37.90, 332.27°)
OKLaboklab(33.33% 0.0969 -0.0481)
OKLCHoklch(33.33% 0.108 333.6)
XYZxyz(5.4778, 3.2514, 7.3588)
Luminance0.0325 (WCAG relative)
Temperatureneutral
Familypurple

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#551B4D #1B5523
analogous
#401B55 #551B4D #551B30
triadic
#551B4D #4D551B #1B4D55
tetradic
#551B4D #55401B #1B5523 #1B3055
square
#551B4D #55401B #1B5523 #1B3055
split-complementary
#551B4D #30551B #1B5540
monochromatic
#170715 #270C23 #551B4D #832A77 #B239A1

Accessibility & contrast

On white

12.73
#551B4D on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

1.65
#551B4D on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B4D
12.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##551B4D#FFFFFF#000000##FFFFFF
##551B4D1.0012.731.6512.73
#FFFFFF12.731.0021.001.00
#0000001.6521.001.0021.00
##FFFFFF12.731.0021.001.00

Color blindness preview

Protanopia (red-blind)
#1A2D4F
Deuteranopia (green-blind)
#2D364B
Tritanopia (blue-blind)
#591F31
Achromatopsia (no color)
#333333

Design tokens & code

CSS
--color: #551b4d;
/* rgb */ color: rgb(85, 27, 77);
/* oklch */ color: oklch(33.3% 0.108 333.6);
Tailwind
colors: {
  custom: {
    50: '#875c7f',
    500: '#551b4d',
    950: '#000000',
  },
}
SCSS
$custom: #551b4d;
$custom-light: #875c7f;
$custom-dark: #000000;
JSON
{
  "hex": "#551b4d",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 77
  },
  "hsl": {
    "h": 308.276,
    "s": 51.786,
    "l": 21.961
  },
  "oklch": {
    "l": 0.33326,
    "c": 0.10816,
    "h": 333.6
  },
  "luminance": 0.03251
}

Semantic roles & 50–950 ramp

primary
#551B4D
secondary
#418B4B
accent
#DB604D
background
#F8F5F7
surface
#F0E9EE
border
#CBC5C9
text
#0B040A
muted
#7C797C

Preview Lab

Preview with #551B4D

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

Preview Lab → · Contrast checker → · Palette generator →

#551B4D Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva