#551B64#551B64

#551B64 is a dark, vivid purple. Relative luminance 0.036; OKLCH L 34.8% C 0.130 H 318.6°. Best body text is #FFFFFF at 12.16:1 contrast (WCAG AA passes).

Color values

HEX	#551B64
RGB	rgb(85, 27, 100)
HSL	hsl(288, 57%, 25%)
HSV	hsv(288, 73%, 39%)
CMYK	cmyk(15%, 73%, 0%, 60.8%)
CIE-LAB	lab(22.43, 38.18, -30.73)
CIE-LCH	lch(22.43, 49.01, 321.17°)
OKLab	oklab(34.79% 0.0978 -0.0861)
OKLCH	oklch(34.79% 0.13 318.6)
XYZ	xyz(6.4382, 3.6356, 12.4167)
Luminance	0.0364 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Plum Purple

#4E0550

ΔE00 4.67

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B64 #2A641B

analogous

#301B64 #551B64 #641B4F

triadic

#551B64 #64551B #1B6455

tetradic

#551B64 #64301B #2A641B #1B4F64

square

#551B64 #64301B #2A641B #1B4F64

split-complementary

#551B64 #4F641B #1B6430

monochromatic

#140718 #2C0E34 #551B64 #7E2894 #A735C4

Accessibility & contrast

On white

12.16

#551B64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#551B64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B64

12.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B64	#FFFFFF	#000000	##FFFFFF
##551B64	1.00	12.16	1.73	12.16
#FFFFFF	12.16	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003266

Deuteranopia (green-blind)

#1F3762

Tritanopia (blue-blind)

#55293D

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #551b64;
/* rgb */ color: rgb(85, 27, 100);
/* oklch */ color: oklch(34.8% 0.130 318.6);

Tailwind

colors: {
  custom: {
    50: '#885d90',
    500: '#551b64',
    950: '#000000',
  },
}

SCSS

$custom: #551b64;
$custom-light: #885d90;
$custom-dark: #000000;

JSON

{
  "hex": "#551b64",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 100
  },
  "hsl": {
    "h": 287.671,
    "s": 57.48,
    "l": 24.902
  },
  "oklch": {
    "l": 0.34794,
    "c": 0.13032,
    "h": 318.6
  },
  "luminance": 0.03635
}

Semantic roles & 50–950 ramp

primary

#551B64

secondary

#539941

accent

#E14767

background

#F8F5F8

surface

#F0E9F0

border

#CBC5CB

text

#0C040C

muted

#7D797D

Preview Lab

Preview with #551B64

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

Preview Lab → · Contrast checker → · Palette generator →