#551B80#551B80

#551B80 is a dark, vivid violet. Relative luminance 0.043; OKLCH L 37.0% C 0.159 H 305.9°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#551B80
RGB	rgb(85, 27, 128)
HSL	hsl(274, 65%, 30%)
HSV	hsv(274, 79%, 50%)
CMYK	cmyk(33.6%, 78.9%, 0%, 49.8%)
CIE-LAB	lab(24.56, 44.62, -45.30)
CIE-LCH	lch(24.56, 63.58, 314.57°)
OKLab	oklab(36.98% 0.0934 -0.1289)
OKLCH	oklch(36.98% 0.159 305.9)
XYZ	xyz(8.0337, 4.2737, 20.8196)
Luminance	0.0427 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 3.93

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B80 #46801B

analogous

#221B80 #551B80 #801B78

triadic

#551B80 #80551B #1B8055

tetradic

#551B80 #80221B #46801B #1B7880

square

#551B80 #80221B #46801B #1B7880

split-complementary

#551B80 #78801B #1B8022

monochromatic

#12061B #33104D #551B80 #7726B3 #963FD6

Accessibility & contrast

On white

11.32

#551B80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#551B80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B80

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B80	#FFFFFF	#000000	##FFFFFF
##551B80	1.00	11.32	1.85	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003983

Deuteranopia (green-blind)

#003B7E

Tritanopia (blue-blind)

#4D344D

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #551b80;
/* rgb */ color: rgb(85, 27, 128);
/* oklch */ color: oklch(37.0% 0.159 305.9);

Tailwind

colors: {
  custom: {
    50: '#8a5ea6',
    500: '#551b80',
    950: '#000000',
  },
}

SCSS

$custom: #551b80;
$custom-light: #8a5ea6;
$custom-dark: #000000;

JSON

{
  "hex": "#551b80",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 128
  },
  "hsl": {
    "h": 274.455,
    "s": 65.161,
    "l": 30.392
  },
  "oklch": {
    "l": 0.36977,
    "c": 0.15919,
    "h": 305.9
  },
  "luminance": 0.04274
}

Semantic roles & 50–950 ramp

primary

#551B80

secondary

#73B443

accent

#E84087

background

#F8F5FA

surface

#F0E9F4

border

#CBC5CE

text

#0C050F

muted

#7D797F

Preview Lab

Preview with #551B80

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

Preview Lab → · Contrast checker → · Palette generator →