#511B66#511B66

#511B66 is a dark, vivid purple. Relative luminance 0.035; OKLCH L 34.3% C 0.131 H 314.8°. Best body text is #FFFFFF at 12.36:1 contrast (WCAG AA passes).

Color values

HEX	#511B66
RGB	rgb(81, 27, 102)
HSL	hsl(283, 58%, 25%)
HSV	hsv(283, 74%, 40%)
CMYK	cmyk(20.6%, 73.5%, 0%, 60%)
CIE-LAB	lab(21.92, 37.65, -32.89)
CIE-LCH	lch(21.92, 50.00, 318.86°)
OKLab	oklab(34.34% 0.0921 -0.0926)
OKLCH	oklch(34.34% 0.131 314.8)
XYZ	xyz(6.1832, 3.4927, 12.9163)
Luminance	0.0349 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B66 #30661B

analogous

#2B1B66 #511B66 #661B55

triadic

#511B66 #66511B #1B6651

tetradic

#511B66 #662B1B #30661B #1B5566

square

#511B66 #662B1B #30661B #1B5566

split-complementary

#511B66 #55661B #1B662B

monochromatic

#130618 #2B0E36 #511B66 #772896 #9E35C7

Accessibility & contrast

On white

12.36

#511B66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#511B66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B66

12.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B66	#FFFFFF	#000000	##FFFFFF
##511B66	1.00	12.36	1.70	12.36
#FFFFFF	12.36	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003168

Deuteranopia (green-blind)

#183664

Tritanopia (blue-blind)

#4F2A3E

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #511b66;
/* rgb */ color: rgb(81, 27, 102);
/* oklch */ color: oklch(34.3% 0.131 314.8);

Tailwind

colors: {
  custom: {
    50: '#855d92',
    500: '#511b66',
    950: '#000000',
  },
}

SCSS

$custom: #511b66;
$custom-light: #855d92;
$custom-dark: #000000;

JSON

{
  "hex": "#511b66",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 102
  },
  "hsl": {
    "h": 283.2,
    "s": 58.14,
    "l": 25.294
  },
  "oklch": {
    "l": 0.34341,
    "c": 0.13062,
    "h": 314.8
  },
  "luminance": 0.03493
}

Semantic roles & 50–950 ramp

primary

#511B66

secondary

#5B9B41

accent

#E14672

background

#F8F5F9

surface

#EFE9F1

border

#CAC5CB

text

#0B040D

muted

#7C797E

Preview Lab

Preview with #511B66

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

Preview Lab → · Contrast checker → · Palette generator →