#511B5B#511B5B

#511B5B is a dark, moderate purple. Relative luminance 0.033; OKLCH L 33.6% C 0.119 H 321.0°. Best body text is #FFFFFF at 12.67:1 contrast (WCAG AA passes).

Color values

HEX	#511B5B
RGB	rgb(81, 27, 91)
HSL	hsl(291, 54%, 23%)
HSV	hsv(291, 70%, 36%)
CMYK	cmyk(11%, 70.3%, 0%, 64.3%)
CIE-LAB	lab(21.17, 35.21, -26.85)
CIE-LCH	lch(21.17, 44.28, 322.67°)
OKLab	oklab(33.56% 0.0927 -0.0749)
OKLCH	oklch(33.56% 0.119 321)
XYZ	xyz(5.6734, 3.2888, 10.2315)
Luminance	0.0329 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B5B #255B1B

analogous

#311B5B #511B5B #5B1B45

triadic

#511B5B #5B511B #1B5B51

tetradic

#511B5B #5B311B #255B1B #1B455B

square

#511B5B #5B311B #255B1B #1B455B

split-complementary

#511B5B #455B1B #1B5B31

monochromatic

#150718 #270D2C #511B5B #7B298A #A537B9

Accessibility & contrast

On white

12.67

#511B5B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.66

#511B5B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B5B

12.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B5B	#FFFFFF	#000000	##FFFFFF
##511B5B	1.00	12.67	1.66	12.67
#FFFFFF	12.67	1.00	21.00	1.00
#000000	1.66	21.00	1.00	21.00
##FFFFFF	12.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#092F5D

Deuteranopia (green-blind)

#223559

Tritanopia (blue-blind)

#522638

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #511b5b;
/* rgb */ color: rgb(81, 27, 91);
/* oklch */ color: oklch(33.6% 0.119 321.0);

Tailwind

colors: {
  custom: {
    50: '#845c8a',
    500: '#511b5b',
    950: '#000000',
  },
}

SCSS

$custom: #511b5b;
$custom-light: #845c8a;
$custom-dark: #000000;

JSON

{
  "hex": "#511b5b",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 91
  },
  "hsl": {
    "h": 290.625,
    "s": 54.237,
    "l": 23.137
  },
  "oklch": {
    "l": 0.3356,
    "c": 0.11917,
    "h": 321
  },
  "luminance": 0.03289
}

Semantic roles & 50–950 ramp

primary

#511B5B

secondary

#4E9141

accent

#DE4A61

background

#F8F5F8

surface

#EFE9F0

border

#CAC5CB

text

#0B040B

muted

#7C797C

Preview Lab

Preview with #511B5B

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

Preview Lab → · Contrast checker → · Palette generator →