#511B7D#511B7D

#511B7D is a dark, vivid violet. Relative luminance 0.040; OKLCH L 36.2% C 0.155 H 304.6°. Best body text is #FFFFFF at 11.65:1 contrast (WCAG AA passes).

Color values

HEX	#511B7D
RGB	rgb(81, 27, 125)
HSL	hsl(273, 64%, 30%)
HSV	hsv(273, 78%, 49%)
CMYK	cmyk(35.2%, 78.4%, 0%, 51%)
CIE-LAB	lab(23.72, 43.13, -44.79)
CIE-LCH	lch(23.72, 62.18, 313.92°)
OKLab	oklab(36.18% 0.0882 -0.1276)
OKLCH	oklch(36.18% 0.155 304.6)
XYZ	xyz(7.4861, 4.0139, 19.7784)
Luminance	0.0401 (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

#511B7D #477D1B

analogous

#201B7D #511B7D #7D1B78

triadic

#511B7D #7D511B #1B7D51

tetradic

#511B7D #7D201B #477D1B #1B787D

square

#511B7D #7D201B #477D1B #1B787D

split-complementary

#511B7D #787D1B #1B7D20

monochromatic

#100519 #30104B #511B7D #7226AF #913DD5

Accessibility & contrast

On white

11.65

#511B7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#511B7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B7D

11.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B7D	#FFFFFF	#000000	##FFFFFF
##511B7D	1.00	11.65	1.80	11.65
#FFFFFF	11.65	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003780

Deuteranopia (green-blind)

#00387B

Tritanopia (blue-blind)

#49344B

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #511b7d;
/* rgb */ color: rgb(81, 27, 125);
/* oklch */ color: oklch(36.2% 0.155 304.6);

Tailwind

colors: {
  custom: {
    50: '#875ea3',
    500: '#511b7d',
    950: '#000000',
  },
}

SCSS

$custom: #511b7d;
$custom-light: #875ea3;
$custom-dark: #000000;

JSON

{
  "hex": "#511b7d",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 125
  },
  "hsl": {
    "h": 273.061,
    "s": 64.474,
    "l": 29.804
  },
  "oklch": {
    "l": 0.36184,
    "c": 0.15506,
    "h": 304.6
  },
  "luminance": 0.04014
}

Semantic roles & 50–950 ramp

primary

#511B7D

secondary

#74B143

accent

#E7408B

background

#F8F5FA

surface

#F0E9F4

border

#CBC5CE

text

#0C050F

muted

#7D797F

Preview Lab

Preview with #511B7D

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

Preview Lab → · Contrast checker → · Palette generator →