#511B5A#511B5A

#511B5A is a dark, moderate purple. Relative luminance 0.033; OKLCH L 33.5% C 0.118 H 321.7°. Best body text is #FFFFFF at 12.69:1 contrast (WCAG AA passes).

Color values

HEX	#511B5A
RGB	rgb(81, 27, 90)
HSL	hsl(291, 54%, 23%)
HSV	hsv(291, 70%, 35%)
CMYK	cmyk(10%, 70%, 0%, 64.7%)
CIE-LAB	lab(21.10, 35.00, -26.29)
CIE-LCH	lch(21.10, 43.77, 323.09°)
OKLab	oklab(33.49% 0.0927 -0.0733)
OKLCH	oklch(33.49% 0.118 321.7)
XYZ	xyz(5.6305, 3.2717, 10.0058)
Luminance	0.0327 (WCAG relative)
Temperature	neutral
Family	purple

Closest named colors

Royal Purple (survey)

#4B006E

ΔE00 7.07

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B5A #245A1B

analogous

#321B5A #511B5A #5A1B43

triadic

#511B5A #5A511B #1B5A51

tetradic

#511B5A #5A321B #245A1B #1B435A

square

#511B5A #5A321B #245A1B #1B435A

split-complementary

#511B5A #435A1B #1B5A32

monochromatic

#150718 #270D2B #511B5A #7B2989 #A637B8

Accessibility & contrast

On white

12.69

#511B5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#511B5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B5A

12.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B5A	#FFFFFF	#000000	##FFFFFF
##511B5A	1.00	12.69	1.65	12.69
#FFFFFF	12.69	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0A2F5C

Deuteranopia (green-blind)

#223558

Tritanopia (blue-blind)

#522538

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #511b5a;
/* rgb */ color: rgb(81, 27, 90);
/* oklch */ color: oklch(33.5% 0.118 321.7);

Tailwind

colors: {
  custom: {
    50: '#845c89',
    500: '#511b5a',
    950: '#000000',
  },
}

SCSS

$custom: #511b5a;
$custom-light: #845c89;
$custom-dark: #000000;

JSON

{
  "hex": "#511b5a",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 90
  },
  "hsl": {
    "h": 291.429,
    "s": 53.846,
    "l": 22.941
  },
  "oklch": {
    "l": 0.33492,
    "c": 0.11815,
    "h": 321.7
  },
  "luminance": 0.03271
}

Semantic roles & 50–950 ramp

primary

#511B5A

secondary

#4C9041

accent

#DD4B60

background

#F8F5F8

surface

#EFE9F0

border

#CAC5CB

text

#0B040B

muted

#7C797C

Preview Lab

Preview with #511B5A

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

Preview Lab → · Contrast checker → · Palette generator →