#511F81#511F81

#511F81 is a dark, vivid violet. Relative luminance 0.043; OKLCH L 37.0% C 0.155 H 302.6°. Best body text is #FFFFFF at 11.27:1 contrast (WCAG AA passes).

Color values

HEX	#511F81
RGB	rgb(81, 31, 129)
HSL	hsl(271, 61%, 31%)
HSV	hsv(271, 76%, 51%)
CMYK	cmyk(37.2%, 76%, 0%, 49.4%)
CIE-LAB	lab(24.68, 42.33, -45.74)
CIE-LCH	lch(24.68, 62.33, 312.78°)
OKLab	oklab(36.97% 0.0833 -0.1304)
OKLCH	oklch(36.97% 0.155 302.6)
XYZ	xyz(7.8448, 4.3143, 21.1841)
Luminance	0.0431 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 4.22

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511F81 #4F811F

analogous

#201F81 #511F81 #811F80

triadic

#511F81 #81511F #1F8151

tetradic

#511F81 #81201F #4F811F #1F8081

square

#511F81 #81201F #4F811F #1F8081

split-complementary

#511F81 #80811F #1F8120

monochromatic

#13071E #321350 #511F81 #702BB2 #8F47D3

Accessibility & contrast

On white

11.27

#511F81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#511F81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511F81

11.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511F81	#FFFFFF	#000000	##FFFFFF
##511F81	1.00	11.27	1.86	11.27
#FFFFFF	11.27	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A84

Deuteranopia (green-blind)

#003A7F

Tritanopia (blue-blind)

#47374E

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #511f81;
/* rgb */ color: rgb(81, 31, 129);
/* oklch */ color: oklch(37.0% 0.155 302.6);

Tailwind

colors: {
  custom: {
    50: '#8760a6',
    500: '#511f81',
    950: '#000000',
  },
}

SCSS

$custom: #511f81;
$custom-light: #8760a6;
$custom-dark: #000000;

JSON

{
  "hex": "#511f81",
  "rgb": {
    "r": 81,
    "g": 31,
    "b": 129
  },
  "hsl": {
    "h": 270.612,
    "s": 61.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.3697,
    "c": 0.15474,
    "h": 302.6
  },
  "luminance": 0.04314
}

Semantic roles & 50–950 ramp

primary

#511F81

secondary

#7DB448

accent

#E44392

background

#F8F5FA

surface

#F0EAF4

border

#CBC6CE

text

#0C050F

muted

#7D797F

Preview Lab

Preview with #511F81

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

Preview Lab → · Contrast checker → · Palette generator →