#551B88#551B88

#551B88 is a dark, vivid violet. Relative luminance 0.045; OKLCH L 37.7% C 0.168 H 303.0°. Best body text is #FFFFFF at 11.06:1 contrast (WCAG AA passes).

Color values

HEX	#551B88
RGB	rgb(85, 27, 136)
HSL	hsl(272, 67%, 32%)
HSV	hsv(272, 80%, 53%)
CMYK	cmyk(37.5%, 80.1%, 0%, 46.7%)
CIE-LAB	lab(25.24, 46.56, -49.21)
CIE-LCH	lch(25.24, 67.75, 313.41°)
OKLab	oklab(37.67% 0.0913 -0.1404)
OKLCH	oklch(37.67% 0.168 303)
XYZ	xyz(8.5811, 4.4927, 23.7029)
Luminance	0.0449 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 3.75

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B88 #4E881B

analogous

#1F1B88 #551B88 #881B85

triadic

#551B88 #88551B #1B8855

tetradic

#551B88 #881F1B #4E881B #1B8588

square

#551B88 #881F1B #4E881B #1B8588

split-complementary

#551B88 #85881B #1B881F

monochromatic

#150722 #351155 #551B88 #7525BB #9444DA

Accessibility & contrast

On white

11.06

#551B88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#551B88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B88

11.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B88	#FFFFFF	#000000	##FFFFFF
##551B88	1.00	11.06	1.90	11.06
#FFFFFF	11.06	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B8B

Deuteranopia (green-blind)

#003C86

Tritanopia (blue-blind)

#4A3851

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #551b88;
/* rgb */ color: rgb(85, 27, 136);
/* oklch */ color: oklch(37.7% 0.168 303.0);

Tailwind

colors: {
  custom: {
    50: '#8a5fac',
    500: '#551b88',
    950: '#000000',
  },
}

SCSS

$custom: #551b88;
$custom-light: #8a5fac;
$custom-dark: #000000;

JSON

{
  "hex": "#551b88",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 136
  },
  "hsl": {
    "h": 271.927,
    "s": 66.871,
    "l": 31.961
  },
  "oklch": {
    "l": 0.37666,
    "c": 0.1675,
    "h": 303
  },
  "luminance": 0.04493
}

Semantic roles & 50–950 ramp

primary

#551B88

secondary

#7CBB44

accent

#EA3E8E

background

#F8F5FA

surface

#F0EAF4

border

#CBC6CE

text

#0C0510

muted

#7D797F

Preview Lab

Preview with #551B88

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

Preview Lab → · Contrast checker → · Palette generator →