#551B90#551B90

#551B90 is a dark, vivid violet. Relative luminance 0.047; OKLCH L 38.4% C 0.176 H 300.4°. Best body text is #FFFFFF at 10.79:1 contrast (WCAG AA passes).

Color values

HEX	#551B90
RGB	rgb(85, 27, 144)
HSL	hsl(270, 68%, 34%)
HSV	hsv(270, 81%, 56%)
CMYK	cmyk(41%, 81.3%, 0%, 43.5%)
CIE-LAB	lab(25.95, 48.52, -53.03)
CIE-LCH	lch(25.95, 71.88, 312.46°)
OKLab	oklab(38.38% 0.089 -0.1516)
OKLCH	oklch(38.38% 0.176 300.4)
XYZ	xyz(9.1710, 4.7287, 26.8097)
Luminance	0.0473 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B90 #56901B

analogous

#1B1B90 #551B90 #8F1B90

triadic

#551B90 #90551B #1B9055

tetradic

#551B90 #901B1B #56901B #1B908F

square

#551B90 #901B1B #56901B #1B908F

split-complementary

#551B90 #908F1B #1B901B

monochromatic

#180829 #37115C #551B90 #7325C4 #9249DD

Accessibility & contrast

On white

10.79

#551B90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#551B90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B90

10.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B90	#FFFFFF	#000000	##FFFFFF
##551B90	1.00	10.79	1.95	10.79
#FFFFFF	10.79	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D93

Deuteranopia (green-blind)

#003D8E

Tritanopia (blue-blind)

#473B56

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #551b90;
/* rgb */ color: rgb(85, 27, 144);
/* oklch */ color: oklch(38.4% 0.176 300.4);

Tailwind

colors: {
  custom: {
    50: '#8b5fb1',
    500: '#551b90',
    950: '#000000',
  },
}

SCSS

$custom: #551b90;
$custom-light: #8b5fb1;
$custom-dark: #000000;

JSON

{
  "hex": "#551b90",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 144
  },
  "hsl": {
    "h": 269.744,
    "s": 68.421,
    "l": 33.529
  },
  "oklch": {
    "l": 0.3838,
    "c": 0.17581,
    "h": 300.4
  },
  "luminance": 0.04729
}

Semantic roles & 50–950 ramp

primary

#551B90

secondary

#84BF48

accent

#EB3D95

background

#F8F5FB

surface

#F0EAF6

border

#CBC6D0

text

#0D0511

muted

#7D7980

Preview Lab

Preview with #551B90

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

Preview Lab → · Contrast checker → · Palette generator →