#551B72#551B72

#551B72 is a dark, vivid purple. Relative luminance 0.039; OKLCH L 35.8% C 0.145 H 311.7°. Best body text is #FFFFFF at 11.76:1 contrast (WCAG AA passes).

Color values

HEX	#551B72
RGB	rgb(85, 27, 114)
HSL	hsl(280, 62%, 28%)
HSV	hsv(280, 76%, 45%)
CMYK	cmyk(25.4%, 76.3%, 0%, 55.3%)
CIE-LAB	lab(23.44, 41.32, -38.19)
CIE-LCH	lch(23.44, 56.26, 317.25°)
OKLab	oklab(35.84% 0.0962 -0.108)
OKLCH	oklch(35.84% 0.145 311.7)
XYZ	xyz(7.1749, 3.9303, 16.2970)
Luminance	0.0393 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B72 #38721B

analogous

#291B72 #551B72 #721B63

triadic

#551B72 #72551B #1B7255

tetradic

#551B72 #72291B #38721B #1B6372

square

#551B72 #72291B #38721B #1B6372

split-complementary

#551B72 #63721B #1B7229

monochromatic

#120619 #300F41 #551B72 #7A27A3 #9D38D0

Accessibility & contrast

On white

11.76

#551B72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#551B72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B72

11.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B72	#FFFFFF	#000000	##FFFFFF
##551B72	1.00	11.76	1.79	11.76
#FFFFFF	11.76	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003574

Deuteranopia (green-blind)

#0E3970

Tritanopia (blue-blind)

#512F45

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #551b72;
/* rgb */ color: rgb(85, 27, 114);
/* oklch */ color: oklch(35.8% 0.145 311.7);

Tailwind

colors: {
  custom: {
    50: '#885e9b',
    500: '#551b72',
    950: '#000000',
  },
}

SCSS

$custom: #551b72;
$custom-light: #885e9b;
$custom-dark: #000000;

JSON

{
  "hex": "#551b72",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 114
  },
  "hsl": {
    "h": 280,
    "s": 61.702,
    "l": 27.647
  },
  "oklch": {
    "l": 0.35838,
    "c": 0.14467,
    "h": 311.7
  },
  "luminance": 0.0393
}

Semantic roles & 50–950 ramp

primary

#551B72

secondary

#64A742

accent

#E54379

background

#F8F5F9

surface

#F0E9F2

border

#CBC5CC

text

#0C050E

muted

#7D797E

Preview Lab

Preview with #551B72

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

Preview Lab → · Contrast checker → · Palette generator →