#511B6B#511B6B

#511B6B is a dark, vivid purple. Relative luminance 0.036; OKLCH L 34.7% C 0.136 H 312.4°. Best body text is #FFFFFF at 12.22:1 contrast (WCAG AA passes).

Color values

HEX	#511B6B
RGB	rgb(81, 27, 107)
HSL	hsl(281, 60%, 26%)
HSV	hsv(281, 75%, 42%)
CMYK	cmyk(24.3%, 74.8%, 0%, 58%)
CIE-LAB	lab(22.28, 38.81, -35.56)
CIE-LCH	lch(22.28, 52.64, 317.50°)
OKLab	oklab(34.72% 0.0916 -0.1004)
OKLCH	oklch(34.72% 0.136 312.4)
XYZ	xyz(6.4386, 3.5949, 14.2618)
Luminance	0.0360 (WCAG relative)
Temperature	cool
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B6B #356B1B

analogous

#291B6B #511B6B #6B1B5D

triadic

#511B6B #6B511B #1B6B51

tetradic

#511B6B #6B291B #356B1B #1B5D6B

square

#511B6B #6B291B #356B1B #1B5D6B

split-complementary

#511B6B #5D6B1B #1B6B29

monochromatic

#120618 #2C0F3A #511B6B #76279C #9B35CC

Accessibility & contrast

On white

12.22

#511B6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#511B6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B6B

12.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B6B	#FFFFFF	#000000	##FFFFFF
##511B6B	1.00	12.22	1.72	12.22
#FFFFFF	12.22	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00336D

Deuteranopia (green-blind)

#123669

Tritanopia (blue-blind)

#4E2C41

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #511b6b;
/* rgb */ color: rgb(81, 27, 107);
/* oklch */ color: oklch(34.7% 0.136 312.4);

Tailwind

colors: {
  custom: {
    50: '#855d96',
    500: '#511b6b',
    950: '#000000',
  },
}

SCSS

$custom: #511b6b;
$custom-light: #855d96;
$custom-dark: #000000;

JSON

{
  "hex": "#511b6b",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 107
  },
  "hsl": {
    "h": 280.5,
    "s": 59.701,
    "l": 26.275
  },
  "oklch": {
    "l": 0.34719,
    "c": 0.13591,
    "h": 312.4
  },
  "luminance": 0.03595
}

Semantic roles & 50–950 ramp

primary

#511B6B

secondary

#60A042

accent

#E34578

background

#F8F5F9

surface

#F0E9F2

border

#CBC5CC

text

#0B040D

muted

#7C797E

Preview Lab

Preview with #511B6B

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

Preview Lab → · Contrast checker → · Palette generator →