#511D81#511D81

#511D81 is a dark, vivid violet. Relative luminance 0.042; OKLCH L 36.7% C 0.157 H 302.9°. Best body text is #FFFFFF at 11.40:1 contrast (WCAG AA passes).

Color values

HEX	#511D81
RGB	rgb(81, 29, 129)
HSL	hsl(271, 63%, 31%)
HSV	hsv(271, 78%, 51%)
CMYK	cmyk(37.2%, 77.5%, 0%, 49.4%)
CIE-LAB	lab(24.36, 43.25, -46.27)
CIE-LCH	lch(24.36, 63.33, 313.07°)
OKLab	oklab(36.74% 0.0853 -0.1319)
OKLCH	oklch(36.74% 0.157 302.9)
XYZ	xyz(7.7942, 4.2130, 21.1672)
Luminance	0.0421 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 3.86

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511D81 #4D811D

analogous

#1F1D81 #511D81 #811D7F

triadic

#511D81 #81511D #1D8151

tetradic

#511D81 #811F1D #4D811D #1D7F81

square

#511D81 #811F1D #4D811D #1D7F81

split-complementary

#511D81 #7F811D #1D811F

monochromatic

#12071D #32124F #511D81 #7028B3 #8F44D5

Accessibility & contrast

On white

11.40

#511D81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#511D81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511D81

11.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511D81	#FFFFFF	#000000	##FFFFFF
##511D81	1.00	11.40	1.84	11.40
#FFFFFF	11.40	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003984

Deuteranopia (green-blind)

#003A7F

Tritanopia (blue-blind)

#47364E

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #511d81;
/* rgb */ color: rgb(81, 29, 129);
/* oklch */ color: oklch(36.7% 0.157 302.9);

Tailwind

colors: {
  custom: {
    50: '#875fa6',
    500: '#511d81',
    950: '#000000',
  },
}

SCSS

$custom: #511d81;
$custom-light: #875fa6;
$custom-dark: #000000;

JSON

{
  "hex": "#511d81",
  "rgb": {
    "r": 81,
    "g": 29,
    "b": 129
  },
  "hsl": {
    "h": 271.2,
    "s": 63.291,
    "l": 30.98
  },
  "oklch": {
    "l": 0.36744,
    "c": 0.15708,
    "h": 302.9
  },
  "luminance": 0.04213
}

Semantic roles & 50–950 ramp

primary

#511D81

secondary

#7BB446

accent

#E64191

background

#F8F5FA

surface

#F0E9F4

border

#CBC5CE

text

#0C050F

muted

#7D797F

Preview Lab

Preview with #511D81

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

Preview Lab → · Contrast checker → · Palette generator →