#551B71#551B71

#551B71 is a dark, vivid purple. Relative luminance 0.039; OKLCH L 35.8% C 0.144 H 312.2°. Best body text is #FFFFFF at 11.79:1 contrast (WCAG AA passes).

Color values

HEX	#551B71
RGB	rgb(85, 27, 113)
HSL	hsl(280, 61%, 27%)
HSV	hsv(280, 76%, 44%)
CMYK	cmyk(24.8%, 76.1%, 0%, 55.7%)
CIE-LAB	lab(23.36, 41.09, -37.67)
CIE-LCH	lch(23.36, 55.74, 317.48°)
OKLab	oklab(35.76% 0.0964 -0.1065)
OKLCH	oklch(35.76% 0.144 312.2)
XYZ	xyz(7.1183, 3.9076, 15.9988)
Luminance	0.0391 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B71 #37711B

analogous

#2A1B71 #551B71 #711B62

triadic

#551B71 #71551B #1B7155

tetradic

#551B71 #712A1B #37711B #1B6271

square

#551B71 #712A1B #37711B #1B6271

split-complementary

#551B71 #62711B #1B712A

monochromatic

#130619 #300F40 #551B71 #7A27A2 #9E37CF

Accessibility & contrast

On white

11.79

#551B71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#551B71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B71

11.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B71	#FFFFFF	#000000	##FFFFFF
##551B71	1.00	11.79	1.78	11.79
#FFFFFF	11.79	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003573

Deuteranopia (green-blind)

#10396F

Tritanopia (blue-blind)

#522E44

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #551b71;
/* rgb */ color: rgb(85, 27, 113);
/* oklch */ color: oklch(35.8% 0.144 312.2);

Tailwind

colors: {
  custom: {
    50: '#885e9a',
    500: '#551b71',
    950: '#000000',
  },
}

SCSS

$custom: #551b71;
$custom-light: #885e9a;
$custom-dark: #000000;

JSON

{
  "hex": "#551b71",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 113
  },
  "hsl": {
    "h": 280.465,
    "s": 61.429,
    "l": 27.451
  },
  "oklch": {
    "l": 0.3576,
    "c": 0.14363,
    "h": 312.2
  },
  "luminance": 0.03907
}

Semantic roles & 50–950 ramp

primary

#551B71

secondary

#63A642

accent

#E54378

background

#F8F5F9

surface

#F0E9F2

border

#CBC5CC

text

#0C050E

muted

#7D797E

Preview Lab

Preview with #551B71

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

Preview Lab → · Contrast checker → · Palette generator →