#551B6D#551B6D

#551B6D is a dark, vivid purple. Relative luminance 0.038; OKLCH L 35.5% C 0.140 H 314.0°. Best body text is #FFFFFF at 11.91:1 contrast (WCAG AA passes).

Color values

HEX	#551B6D
RGB	rgb(85, 27, 109)
HSL	hsl(282, 60%, 27%)
HSV	hsv(282, 75%, 43%)
CMYK	cmyk(22%, 75.2%, 0%, 57.3%)
CIE-LAB	lab(23.07, 40.18, -35.57)
CIE-LCH	lch(23.07, 53.66, 318.48°)
OKLab	oklab(35.45% 0.097 -0.1003)
OKLCH	oklch(35.45% 0.14 314)
XYZ	xyz(6.8981, 3.8195, 14.8389)
Luminance	0.0382 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B6D #336D1B

analogous

#2C1B6D #551B6D #6D1B5C

triadic

#551B6D #6D551B #1B6D55

tetradic

#551B6D #6D2C1B #336D1B #1B5C6D

square

#551B6D #6D2C1B #336D1B #1B5C6D

split-complementary

#551B6D #5C6D1B #1B6D2C

monochromatic

#130619 #2F0F3C #551B6D #7B279E #A135CD

Accessibility & contrast

On white

11.91

#551B6D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#551B6D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B6D

11.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B6D	#FFFFFF	#000000	##FFFFFF
##551B6D	1.00	11.91	1.76	11.91
#FFFFFF	11.91	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00346F

Deuteranopia (green-blind)

#16386B

Tritanopia (blue-blind)

#532C42

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #551b6d;
/* rgb */ color: rgb(85, 27, 109);
/* oklch */ color: oklch(35.5% 0.140 314.0);

Tailwind

colors: {
  custom: {
    50: '#885d97',
    500: '#551b6d',
    950: '#000000',
  },
}

SCSS

$custom: #551b6d;
$custom-light: #885d97;
$custom-dark: #000000;

JSON

{
  "hex": "#551b6d",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 109
  },
  "hsl": {
    "h": 282.439,
    "s": 60.294,
    "l": 26.667
  },
  "oklch": {
    "l": 0.35453,
    "c": 0.1395,
    "h": 314
  },
  "luminance": 0.03819
}

Semantic roles & 50–950 ramp

primary

#551B6D

secondary

#5EA242

accent

#E34473

background

#F8F5F9

surface

#F0E9F2

border

#CBC5CC

text

#0C040D

muted

#7D797E

Preview Lab

Preview with #551B6D

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

Preview Lab → · Contrast checker → · Palette generator →