#551B70#551B70

#551B70 is a dark, vivid purple. Relative luminance 0.039; OKLCH L 35.7% C 0.143 H 312.6°. Best body text is #FFFFFF at 11.82:1 contrast (WCAG AA passes).

Color values

HEX	#551B70
RGB	rgb(85, 27, 112)
HSL	hsl(281, 61%, 27%)
HSV	hsv(281, 76%, 44%)
CMYK	cmyk(24.1%, 75.9%, 0%, 56.1%)
CIE-LAB	lab(23.29, 40.86, -37.15)
CIE-LCH	lch(23.29, 55.22, 317.72°)
OKLab	oklab(35.68% 0.0965 -0.1049)
OKLCH	oklch(35.68% 0.143 312.6)
XYZ	xyz(7.0623, 3.8852, 15.7040)
Luminance	0.0389 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B70 #36701B

analogous

#2A1B70 #551B70 #701B61

triadic

#551B70 #70551B #1B7055

tetradic

#551B70 #702A1B #36701B #1B6170

square

#551B70 #702A1B #36701B #1B6170

split-complementary

#551B70 #61701B #1B702A

monochromatic

#130619 #300F3F #551B70 #7A27A1 #9E37CF

Accessibility & contrast

On white

11.82

#551B70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#551B70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B70

11.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B70	#FFFFFF	#000000	##FFFFFF
##551B70	1.00	11.82	1.78	11.82
#FFFFFF	11.82	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003572

Deuteranopia (green-blind)

#12396E

Tritanopia (blue-blind)

#522E44

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #551b70;
/* rgb */ color: rgb(85, 27, 112);
/* oklch */ color: oklch(35.7% 0.143 312.6);

Tailwind

colors: {
  custom: {
    50: '#885e9a',
    500: '#551b70',
    950: '#000000',
  },
}

SCSS

$custom: #551b70;
$custom-light: #885e9a;
$custom-dark: #000000;

JSON

{
  "hex": "#551b70",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 112
  },
  "hsl": {
    "h": 280.941,
    "s": 61.151,
    "l": 27.255
  },
  "oklch": {
    "l": 0.35682,
    "c": 0.1426,
    "h": 312.6
  },
  "luminance": 0.03885
}

Semantic roles & 50–950 ramp

primary

#551B70

secondary

#61A542

accent

#E44477

background

#F8F5F9

surface

#F0E9F2

border

#CBC5CC

text

#0C050E

muted

#7D797E

Preview Lab

Preview with #551B70

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

Preview Lab → · Contrast checker → · Palette generator →