#551D81#551D81

#551D81 is a dark, vivid violet. Relative luminance 0.044; OKLCH L 37.3% C 0.158 H 305.3°. Best body text is #FFFFFF at 11.18:1 contrast (WCAG AA passes).

Color values

HEX	#551D81
RGB	rgb(85, 29, 129)
HSL	hsl(274, 63%, 31%)
HSV	hsv(274, 78%, 51%)
CMYK	cmyk(34.1%, 77.5%, 0%, 49.4%)
CIE-LAB	lab(24.94, 44.01, -45.31)
CIE-LCH	lch(24.94, 63.16, 314.16°)
OKLab	oklab(37.27% 0.0913 -0.1289)
OKLCH	oklch(37.27% 0.158 305.3)
XYZ	xyz(8.1472, 4.3951, 21.1837)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 4.18

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#551D81 #49811D

analogous

#231D81 #551D81 #811D7B

triadic

#551D81 #81551D #1D8155

tetradic

#551D81 #81231D #49811D #1D7B81

square

#551D81 #81231D #49811D #1D7B81

split-complementary

#551D81 #7B811D #1D8123

monochromatic

#13071D #34124F #551D81 #7628B3 #9544D5

Accessibility & contrast

On white

11.18

#551D81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#551D81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #551D81

11.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##551D81	#FFFFFF	#000000	##FFFFFF
##551D81	1.00	11.18	1.88	11.18
#FFFFFF	11.18	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A84

Deuteranopia (green-blind)

#003B7F

Tritanopia (blue-blind)

#4D364E

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #551d81;
/* rgb */ color: rgb(85, 29, 129);
/* oklch */ color: oklch(37.3% 0.158 305.3);

Tailwind

colors: {
  custom: {
    50: '#895fa6',
    500: '#551d81',
    950: '#000000',
  },
}

SCSS

$custom: #551d81;
$custom-light: #895fa6;
$custom-dark: #000000;

JSON

{
  "hex": "#551d81",
  "rgb": {
    "r": 85,
    "g": 29,
    "b": 129
  },
  "hsl": {
    "h": 273.6,
    "s": 63.291,
    "l": 30.98
  },
  "oklch": {
    "l": 0.3727,
    "c": 0.15799,
    "h": 305.3
  },
  "luminance": 0.04395
}

Semantic roles & 50–950 ramp

primary

#551D81

secondary

#76B446

accent

#E6418A

background

#F8F5FA

surface

#F0EAF4

border

#CBC6CE

text

#0C050F

muted

#7D797F

Preview Lab

Preview with #551D81

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

Preview Lab → · Contrast checker → · Palette generator →