#511E81#511E81

#511E81 is a dark, vivid violet. Relative luminance 0.043; OKLCH L 36.9% C 0.156 H 302.7°. Best body text is #FFFFFF at 11.34:1 contrast (WCAG AA passes).

Color values

HEX	#511E81
RGB	rgb(81, 30, 129)
HSL	hsl(271, 62%, 31%)
HSV	hsv(271, 77%, 51%)
CMYK	cmyk(37.2%, 76.7%, 0%, 49.4%)
CIE-LAB	lab(24.52, 42.80, -46.01)
CIE-LCH	lch(24.52, 62.84, 312.93°)
OKLab	oklab(36.86% 0.0843 -0.1312)
OKLCH	oklch(36.86% 0.156 302.7)
XYZ	xyz(7.8191, 4.2628, 21.1755)
Luminance	0.0426 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 4.04

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511E81 #4E811E

analogous

#1F1E81 #511E81 #811E7F

triadic

#511E81 #81511E #1E8151

tetradic

#511E81 #811F1E #4E811E #1E7F81

square

#511E81 #811F1E #4E811E #1E7F81

split-complementary

#511E81 #7F811E #1E811F

monochromatic

#13071E #32124F #511E81 #702AB3 #8F46D4

Accessibility & contrast

On white

11.34

#511E81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#511E81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511E81

11.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511E81	#FFFFFF	#000000	##FFFFFF
##511E81	1.00	11.34	1.85	11.34
#FFFFFF	11.34	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003984

Deuteranopia (green-blind)

#003A7F

Tritanopia (blue-blind)

#47374E

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #511e81;
/* rgb */ color: rgb(81, 30, 129);
/* oklch */ color: oklch(36.9% 0.156 302.7);

Tailwind

colors: {
  custom: {
    50: '#875fa6',
    500: '#511e81',
    950: '#000000',
  },
}

SCSS

$custom: #511e81;
$custom-light: #875fa6;
$custom-dark: #000000;

JSON

{
  "hex": "#511e81",
  "rgb": {
    "r": 81,
    "g": 30,
    "b": 129
  },
  "hsl": {
    "h": 270.909,
    "s": 62.264,
    "l": 31.176
  },
  "oklch": {
    "l": 0.36856,
    "c": 0.15592,
    "h": 302.7
  },
  "luminance": 0.04263
}

Semantic roles & 50–950 ramp

primary

#511E81

secondary

#7CB447

accent

#E54291

background

#F8F5FA

surface

#F0EAF4

border

#CBC6CE

text

#0C050F

muted

#7D797F

Preview Lab

Preview with #511E81

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

Preview Lab → · Contrast checker → · Palette generator →