#511B78#511B78

#511B78 is a dark, vivid violet. Relative luminance 0.039; OKLCH L 35.8% C 0.150 H 306.6°. Best body text is #FFFFFF at 11.81:1 contrast (WCAG AA passes).

Color values

HEX	#511B78
RGB	rgb(81, 27, 120)
HSL	hsl(275, 63%, 29%)
HSV	hsv(275, 78%, 47%)
CMYK	cmyk(32.5%, 77.5%, 0%, 52.9%)
CIE-LAB	lab(23.30, 41.91, -42.28)
CIE-LCH	lch(23.30, 59.53, 314.74°)
OKLab	oklab(35.76% 0.0893 -0.1202)
OKLCH	oklch(35.76% 0.15 306.6)
XYZ	xyz(7.1747, 3.8893, 18.1384)
Luminance	0.0389 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B78 #42781B

analogous

#231B78 #511B78 #781B71

triadic

#511B78 #78511B #1B7851

tetradic

#511B78 #78231B #42781B #1B7178

square

#511B78 #78231B #42781B #1B7178

split-complementary

#511B78 #71781B #1B7823

monochromatic

#110619 #2F1046 #511B78 #7326AA #933BD3

Accessibility & contrast

On white

11.81

#511B78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#511B78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B78

11.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B78	#FFFFFF	#000000	##FFFFFF
##511B78	1.00	11.81	1.78	11.81
#FFFFFF	11.81	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00367B

Deuteranopia (green-blind)

#003876

Tritanopia (blue-blind)

#4A3248

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #511b78;
/* rgb */ color: rgb(81, 27, 120);
/* oklch */ color: oklch(35.8% 0.150 306.6);

Tailwind

colors: {
  custom: {
    50: '#865da0',
    500: '#511b78',
    950: '#000000',
  },
}

SCSS

$custom: #511b78;
$custom-light: #865da0;
$custom-dark: #000000;

JSON

{
  "hex": "#511b78",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 120
  },
  "hsl": {
    "h": 274.839,
    "s": 63.265,
    "l": 28.824
  },
  "oklch": {
    "l": 0.35762,
    "c": 0.14973,
    "h": 306.6
  },
  "luminance": 0.03889
}

Semantic roles & 50–950 ramp

primary

#511B78

secondary

#6FAC43

accent

#E64187

background

#F8F5F9

surface

#F0E9F2

border

#CBC5CC

text

#0C050F

muted

#7D797E

Preview Lab

Preview with #511B78

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

Preview Lab → · Contrast checker → · Palette generator →