#551B87#551B87

#551B87 is a dark, vivid violet. Relative luminance 0.045; OKLCH L 37.6% C 0.166 H 303.4°. Best body text is #FFFFFF at 11.09:1 contrast (WCAG AA passes).

Color values

HEX	#551B87
RGB	rgb(85, 27, 135)
HSL	hsl(272, 67%, 32%)
HSV	hsv(272, 80%, 53%)
CMYK	cmyk(37%, 80%, 0%, 47.1%)
CIE-LAB	lab(25.15, 46.31, -48.73)
CIE-LCH	lch(25.15, 67.23, 313.54°)
OKLab	oklab(37.58% 0.0916 -0.139)
OKLCH	oklch(37.58% 0.166 303.4)
XYZ	xyz(8.5104, 4.4644, 23.3303)
Luminance	0.0446 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 3.74

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551B87 #4D871B

analogous

#1F1B87 #551B87 #871B83

triadic

#551B87 #87551B #1B8755

tetradic

#551B87 #871F1B #4D871B #1B8387

square

#551B87 #871F1B #4D871B #1B8387

split-complementary

#551B87 #83871B #1B871F

monochromatic

#150721 #351154 #551B87 #7525BA #9443D9

Accessibility & contrast

On white

11.09

#551B87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#551B87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551B87

11.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551B87	#FFFFFF	#000000	##FFFFFF
##551B87	1.00	11.09	1.89	11.09
#FFFFFF	11.09	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B8A

Deuteranopia (green-blind)

#003B85

Tritanopia (blue-blind)

#4B3751

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #551b87;
/* rgb */ color: rgb(85, 27, 135);
/* oklch */ color: oklch(37.6% 0.166 303.4);

Tailwind

colors: {
  custom: {
    50: '#8a5fab',
    500: '#551b87',
    950: '#000000',
  },
}

SCSS

$custom: #551b87;
$custom-light: #8a5fab;
$custom-dark: #000000;

JSON

{
  "hex": "#551b87",
  "rgb": {
    "r": 85,
    "g": 27,
    "b": 135
  },
  "hsl": {
    "h": 272.222,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.37579,
    "c": 0.16646,
    "h": 303.4
  },
  "luminance": 0.04464
}

Semantic roles & 50–950 ramp

primary

#551B87

secondary

#7BBA44

accent

#EA3E8E

background

#F8F5FA

surface

#F0EAF4

border

#CBC6CE

text

#0C0510

muted

#7D797F

Preview Lab

Preview with #551B87

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

Preview Lab → · Contrast checker → · Palette generator →