#511B83#511B83

#511B83 is a dark, vivid violet. Relative luminance 0.042; OKLCH L 36.7% C 0.161 H 302.5°. Best body text is #FFFFFF at 11.45:1 contrast (WCAG AA passes).

Color values

HEX	#511B83
RGB	rgb(81, 27, 131)
HSL	hsl(271, 66%, 31%)
HSV	hsv(271, 79%, 51%)
CMYK	cmyk(38.2%, 79.4%, 0%, 48.6%)
CIE-LAB	lab(24.23, 44.62, -47.74)
CIE-LCH	lch(24.23, 65.35, 313.06°)
OKLab	oklab(36.71% 0.0866 -0.1362)
OKLCH	oklch(36.71% 0.161 302.5)
XYZ	xyz(7.8810, 4.1719, 21.8584)
Luminance	0.0417 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 3.46

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B83 #4D831B

analogous

#1D1B83 #511B83 #831B81

triadic

#511B83 #83511B #1B8351

tetradic

#511B83 #831D1B #4D831B #1B8183

square

#511B83 #831D1B #4D831B #1B8183

split-complementary

#511B83 #81831B #1B831D

monochromatic

#12061E #321150 #511B83 #7025B6 #8F41D8

Accessibility & contrast

On white

11.45

#511B83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#511B83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B83

11.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B83	#FFFFFF	#000000	##FFFFFF
##511B83	1.00	11.45	1.83	11.45
#FFFFFF	11.45	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003986

Deuteranopia (green-blind)

#003981

Tritanopia (blue-blind)

#46364E

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #511b83;
/* rgb */ color: rgb(81, 27, 131);
/* oklch */ color: oklch(36.7% 0.161 302.5);

Tailwind

colors: {
  custom: {
    50: '#875ea8',
    500: '#511b83',
    950: '#000000',
  },
}

SCSS

$custom: #511b83;
$custom-light: #875ea8;
$custom-dark: #000000;

JSON

{
  "hex": "#511b83",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 131
  },
  "hsl": {
    "h": 271.154,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.36705,
    "c": 0.16144,
    "h": 302.5
  },
  "luminance": 0.04172
}

Semantic roles & 50–950 ramp

primary

#511B83

secondary

#7BB643

accent

#E93F91

background

#F8F5FA

surface

#F0E9F4

border

#CBC5CE

text

#0C0510

muted

#7D797F

Preview Lab

Preview with #511B83

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

Preview Lab → · Contrast checker → · Palette generator →