#551B8D#551B8D

#551B8D is a dark, vivid violet. Relative luminance 0.046; OKLCH L 38.1% C 0.173 H 301.4°. Best body text is #FFFFFF at 10.89:1 contrast (WCAG AA passes).

Color values

HEX	#551B8D
RGB	rgb(85, 27, 141)
HSL	hsl(271, 68%, 33%)
HSV	hsv(271, 81%, 55%)
CMYK	cmyk(39.7%, 80.9%, 0%, 44.7%)
CIE-LAB	lab(25.68, 47.78, -51.61)
CIE-LCH	lch(25.68, 70.33, 312.79°)
OKLab	oklab(38.11% 0.0899 -0.1474)
OKLCH	oklch(38.11% 0.173 301.4)
XYZ	xyz(8.9448, 4.6382, 25.6182)
Luminance	0.0464 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B8D #538D1B

analogous

#1C1B8D #551B8D #8D1B8C

triadic

#551B8D #8D551B #1B8D55

tetradic

#551B8D #8D1C1B #538D1B #1B8C8D

square

#551B8D #8D1C1B #538D1B #1B8C8D

split-complementary

#551B8D #8C8D1B #1B8D1C

monochromatic

#170726 #36115A #551B8D #7425C0 #9347DC

Accessibility & contrast

On white

10.89

#551B8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#551B8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B8D

10.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B8D	#FFFFFF	#000000	##FFFFFF
##551B8D	1.00	10.89	1.93	10.89
#FFFFFF	10.89	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C90

Deuteranopia (green-blind)

#003C8B

Tritanopia (blue-blind)

#483A54

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #551b8d;
/* rgb */ color: rgb(85, 27, 141);
/* oklch */ color: oklch(38.1% 0.173 301.4);

Tailwind

colors: {
  custom: {
    50: '#8b5faf',
    500: '#551b8d',
    950: '#000000',
  },
}

SCSS

$custom: #551b8d;
$custom-light: #8b5faf;
$custom-dark: #000000;

JSON

{
  "hex": "#551b8d",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 141
  },
  "hsl": {
    "h": 270.526,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.3811,
    "c": 0.1727,
    "h": 301.4
  },
  "luminance": 0.04638
}

Semantic roles & 50–950 ramp

primary

#551B8D

secondary

#81BD46

accent

#EB3D92

background

#F8F5FA

surface

#F0EAF5

border

#CBC6CF

text

#0D0510

muted

#7D797F

Preview Lab

Preview with #551B8D

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

Preview Lab → · Contrast checker → · Palette generator →