#551B97#551B97

#551B97 is a dark, vivid violet. Relative luminance 0.050; OKLCH L 39.0% C 0.183 H 298.3°. Best body text is #FFFFFF at 10.55:1 contrast (WCAG AA passes).

Color values

HEX	#551B97
RGB	rgb(85, 27, 151)
HSL	hsl(268, 70%, 35%)
HSV	hsv(268, 82%, 59%)
CMYK	cmyk(43.7%, 82.1%, 0%, 40.8%)
CIE-LAB	lab(26.59, 50.26, -56.30)
CIE-LCH	lch(26.59, 75.47, 311.76°)
OKLab	oklab(39.02% 0.0868 -0.1612)
OKLCH	oklch(39.02% 0.183 298.3)
XYZ	xyz(9.7227, 4.9494, 29.7152)
Luminance	0.0495 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

#4B006E

ΔE00 7.40

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B97 #5D971B

analogous

#1B1F97 #551B97 #931B97

triadic

#551B97 #97551B #1B9755

tetradic

#551B97 #971B1F #5D971B #1B9793

square

#551B97 #971B1F #5D971B #1B9793

split-complementary

#551B97 #97931B #1F971B

monochromatic

#1B082F #381263 #551B97 #7224CB #914DDF

Accessibility & contrast

On white

10.55

#551B97 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.99

#551B97 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B97

10.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B97	#FFFFFF	#000000	##FFFFFF
##551B97	1.00	10.55	1.99	10.55
#FFFFFF	10.55	1.00	21.00	1.00
#000000	1.99	21.00	1.00	21.00
##FFFFFF	10.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F9A

Deuteranopia (green-blind)

#003E95

Tritanopia (blue-blind)

#443E5A

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #551b97;
/* rgb */ color: rgb(85, 27, 151);
/* oklch */ color: oklch(39.0% 0.183 298.3);

Tailwind

colors: {
  custom: {
    50: '#8c60b7',
    500: '#551b97',
    950: '#000000',
  },
}

SCSS

$custom: #551b97;
$custom-light: #8c60b7;
$custom-dark: #000000;

JSON

{
  "hex": "#551b97",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 151
  },
  "hsl": {
    "h": 268.065,
    "s": 69.663,
    "l": 34.902
  },
  "oklch": {
    "l": 0.39024,
    "c": 0.18307,
    "h": 298.3
  },
  "luminance": 0.0495
}

Semantic roles & 50–950 ramp

primary

#551B97

secondary

#8BC14C

accent

#EC3B9A

background

#F9F5FB

surface

#F1EAF6

border

#CBC6D0

text

#0D0511

muted

#7E7980

Preview Lab

Preview with #551B97

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

Preview Lab → · Contrast checker → · Palette generator →