#551B8E#551B8E

#551B8E is a dark, vivid violet. Relative luminance 0.047; OKLCH L 38.2% C 0.174 H 301.1°. Best body text is #FFFFFF at 10.86:1 contrast (WCAG AA passes).

Color values

HEX	#551B8E
RGB	rgb(85, 27, 142)
HSL	hsl(270, 68%, 33%)
HSV	hsv(270, 81%, 56%)
CMYK	cmyk(40.1%, 81%, 0%, 44.3%)
CIE-LAB	lab(25.77, 48.03, -52.09)
CIE-LCH	lch(25.77, 70.85, 312.68°)
OKLab	oklab(38.2% 0.0896 -0.1488)
OKLCH	oklch(38.2% 0.174 301.1)
XYZ	xyz(9.0195, 4.6681, 26.0118)
Luminance	0.0467 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B8E #548E1B

analogous

#1C1B8E #551B8E #8E1B8D

triadic

#551B8E #8E551B #1B8E55

tetradic

#551B8E #8E1C1B #548E1B #1B8D8E

square

#551B8E #8E1C1B #548E1B #1B8D8E

split-complementary

#551B8E #8D8E1B #1B8E1C

monochromatic

#170727 #36115B #551B8E #7425C1 #9247DC

Accessibility & contrast

On white

10.86

#551B8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#551B8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B8E

10.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B8E	#FFFFFF	#000000	##FFFFFF
##551B8E	1.00	10.86	1.93	10.86
#FFFFFF	10.86	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C91

Deuteranopia (green-blind)

#003C8C

Tritanopia (blue-blind)

#483A55

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #551b8e;
/* rgb */ color: rgb(85, 27, 142);
/* oklch */ color: oklch(38.2% 0.174 301.1);

Tailwind

colors: {
  custom: {
    50: '#8b5fb0',
    500: '#551b8e',
    950: '#000000',
  },
}

SCSS

$custom: #551b8e;
$custom-light: #8b5fb0;
$custom-dark: #000000;

JSON

{
  "hex": "#551b8e",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 142
  },
  "hsl": {
    "h": 270.261,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.382,
    "c": 0.17373,
    "h": 301.1
  },
  "luminance": 0.04668
}

Semantic roles & 50–950 ramp

primary

#551B8E

secondary

#82BE47

accent

#EB3D93

background

#F8F5FA

surface

#F0EAF5

border

#CBC6CF

text

#0D0511

muted

#7D7980

Preview Lab

Preview with #551B8E

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

Preview Lab → · Contrast checker → · Palette generator →