#551B63#551B63

#551B63 is a dark, vivid purple. Relative luminance 0.036; OKLCH L 34.7% C 0.129 H 319.2°. Best body text is #FFFFFF at 12.19:1 contrast (WCAG AA passes).

Color values

HEX	#551B63
RGB	rgb(85, 27, 99)
HSL	hsl(288, 57%, 25%)
HSV	hsv(288, 73%, 39%)
CMYK	cmyk(14.1%, 72.7%, 0%, 61.2%)
CIE-LAB	lab(22.36, 37.97, -30.18)
CIE-LCH	lch(22.36, 48.50, 321.51°)
OKLab	oklab(34.72% 0.0978 -0.0845)
OKLCH	oklch(34.72% 0.129 319.2)
XYZ	xyz(6.3901, 3.6163, 12.1634)
Luminance	0.0362 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B63 #29631B

analogous

#311B63 #551B63 #631B4D

triadic

#551B63 #63551B #1B6355

tetradic

#551B63 #63311B #29631B #1B4D63

square

#551B63 #63311B #29631B #1B4D63

split-complementary

#551B63 #4D631B #1B6331

monochromatic

#150718 #2C0E33 #551B63 #7E2893 #A835C3

Accessibility & contrast

On white

12.19

#551B63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#551B63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B63

12.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B63	#FFFFFF	#000000	##FFFFFF
##551B63	1.00	12.19	1.72	12.19
#FFFFFF	12.19	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003265

Deuteranopia (green-blind)

#203761

Tritanopia (blue-blind)

#55283D

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #551b63;
/* rgb */ color: rgb(85, 27, 99);
/* oklch */ color: oklch(34.7% 0.129 319.2);

Tailwind

colors: {
  custom: {
    50: '#885d90',
    500: '#551b63',
    950: '#000000',
  },
}

SCSS

$custom: #551b63;
$custom-light: #885d90;
$custom-dark: #000000;

JSON

{
  "hex": "#551b63",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 99
  },
  "hsl": {
    "h": 288.333,
    "s": 57.143,
    "l": 24.706
  },
  "oklch": {
    "l": 0.34724,
    "c": 0.1293,
    "h": 319.2
  },
  "luminance": 0.03616
}

Semantic roles & 50–950 ramp

primary

#551B63

secondary

#529841

accent

#E04765

background

#F8F5F8

surface

#F0E9F0

border

#CBC5CB

text

#0C040C

muted

#7D797D

Preview Lab

Preview with #551B63

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

Preview Lab → · Contrast checker → · Palette generator →