#511B88#511B88

#511B88 is a dark, vivid violet. Relative luminance 0.043; OKLCH L 37.2% C 0.167 H 300.7°. Best body text is #FFFFFF at 11.28:1 contrast (WCAG AA passes).

Color values

HEX	#511B88
RGB	rgb(81, 27, 136)
HSL	hsl(270, 67%, 32%)
HSV	hsv(270, 80%, 53%)
CMYK	cmyk(40.4%, 80.1%, 0%, 46.7%)
CIE-LAB	lab(24.67, 45.87, -50.16)
CIE-LCH	lch(24.67, 67.97, 312.44°)
OKLab	oklab(37.15% 0.0852 -0.1433)
OKLCH	oklch(37.15% 0.167 300.7)
XYZ	xyz(8.2281, 4.3107, 23.6863)
Luminance	0.0431 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B88 #52881B

analogous

#1B1B88 #511B88 #881B88

triadic

#511B88 #88511B #1B8851

tetradic

#511B88 #881B1B #52881B #1B8888

square

#511B88 #881B1B #52881B #1B8888

split-complementary

#511B88 #88881B #1B881B

monochromatic

#140722 #331155 #511B88 #6F25BB #8E44DA

Accessibility & contrast

On white

11.28

#511B88 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#511B88 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B88

11.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B88	#FFFFFF	#000000	##FFFFFF
##511B88	1.00	11.28	1.86	11.28
#FFFFFF	11.28	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A8B

Deuteranopia (green-blind)

#003A86

Tritanopia (blue-blind)

#443851

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #511b88;
/* rgb */ color: rgb(81, 27, 136);
/* oklch */ color: oklch(37.2% 0.167 300.7);

Tailwind

colors: {
  custom: {
    50: '#885eac',
    500: '#511b88',
    950: '#000000',
  },
}

SCSS

$custom: #511b88;
$custom-light: #885eac;
$custom-dark: #000000;

JSON

{
  "hex": "#511b88",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 136
  },
  "hsl": {
    "h": 269.725,
    "s": 66.871,
    "l": 31.961
  },
  "oklch": {
    "l": 0.37151,
    "c": 0.16676,
    "h": 300.7
  },
  "luminance": 0.04311
}

Semantic roles & 50–950 ramp

primary

#511B88

secondary

#80BB44

accent

#EA3E95

background

#F8F5FA

surface

#F0E9F4

border

#CBC5CE

text

#0C0510

muted

#7D797F

Preview Lab

Preview with #511B88

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

Preview Lab → · Contrast checker → · Palette generator →