#551B6E#551B6E

#551B6E is a dark, vivid purple. Relative luminance 0.038; OKLCH L 35.5% C 0.141 H 313.5°. Best body text is #FFFFFF at 11.88:1 contrast (WCAG AA passes).

Color values

HEX	#551B6E
RGB	rgb(85, 27, 110)
HSL	hsl(282, 61%, 27%)
HSV	hsv(282, 75%, 43%)
CMYK	cmyk(22.7%, 75.5%, 0%, 56.9%)
CIE-LAB	lab(23.14, 40.40, -36.10)
CIE-LCH	lch(23.14, 54.18, 318.22°)
OKLab	oklab(35.53% 0.0968 -0.1019)
OKLCH	oklch(35.53% 0.141 313.5)
XYZ	xyz(6.9522, 3.8412, 15.1240)
Luminance	0.0384 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B6E #346E1B

analogous

#2C1B6E #551B6E #6E1B5E

triadic

#551B6E #6E551B #1B6E55

tetradic

#551B6E #6E2C1B #346E1B #1B5E6E

square

#551B6E #6E2C1B #346E1B #1B5E6E

split-complementary

#551B6E #5E6E1B #1B6E2C

monochromatic

#130619 #2F0F3D #551B6E #7B279F #A036CE

Accessibility & contrast

On white

11.88

#551B6E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#551B6E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B6E

11.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B6E	#FFFFFF	#000000	##FFFFFF
##551B6E	1.00	11.88	1.77	11.88
#FFFFFF	11.88	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003470

Deuteranopia (green-blind)

#15386C

Tritanopia (blue-blind)

#522D43

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #551b6e;
/* rgb */ color: rgb(85, 27, 110);
/* oklch */ color: oklch(35.5% 0.141 313.5);

Tailwind

colors: {
  custom: {
    50: '#885d98',
    500: '#551b6e',
    950: '#000000',
  },
}

SCSS

$custom: #551b6e;
$custom-light: #885d98;
$custom-dark: #000000;

JSON

{
  "hex": "#551b6e",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 110
  },
  "hsl": {
    "h": 281.928,
    "s": 60.584,
    "l": 26.863
  },
  "oklch": {
    "l": 0.35529,
    "c": 0.14053,
    "h": 313.5
  },
  "luminance": 0.03841
}

Semantic roles & 50–950 ramp

primary

#551B6E

secondary

#5FA342

accent

#E44474

background

#F8F5F9

surface

#F0E9F2

border

#CBC5CC

text

#0C050E

muted

#7D797E

Preview Lab

Preview with #551B6E

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

Preview Lab → · Contrast checker → · Palette generator →