#511D8B#511D8B

#511D8B is a dark, vivid violet. Relative luminance 0.045; OKLCH L 37.6% C 0.168 H 299.5°. Best body text is #FFFFFF at 11.06:1 contrast (WCAG AA passes).

Color values

HEX	#511D8B
RGB	rgb(81, 29, 139)
HSL	hsl(268, 65%, 33%)
HSV	hsv(268, 79%, 55%)
CMYK	cmyk(41.7%, 79.1%, 0%, 45.5%)
CIE-LAB	lab(25.24, 45.78, -51.11)
CIE-LCH	lch(25.24, 68.62, 311.85°)
OKLab	oklab(37.63% 0.0827 -0.1461)
OKLCH	oklch(37.63% 0.168 299.5)
XYZ	xyz(8.4917, 4.4920, 24.8408)
Luminance	0.0449 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511D8B #578B1D

analogous

#1D208B #511D8B #881D8B

triadic

#511D8B #8B511D #1D8B51

tetradic

#511D8B #8B1D20 #578B1D #1D8B88

square

#511D8B #8B1D20 #578B1D #1D8B88

split-complementary

#511D8B #8B881D #208B1D

monochromatic

#160826 #331258 #511D8B #6F28BE #8D49D9

Accessibility & contrast

On white

11.06

#511D8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#511D8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511D8B

11.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511D8B	#FFFFFF	#000000	##FFFFFF
##511D8B	1.00	11.06	1.90	11.06
#FFFFFF	11.06	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C8E

Deuteranopia (green-blind)

#003B89

Tritanopia (blue-blind)

#433B53

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #511d8b;
/* rgb */ color: rgb(81, 29, 139);
/* oklch */ color: oklch(37.6% 0.168 299.5);

Tailwind

colors: {
  custom: {
    50: '#885fae',
    500: '#511d8b',
    950: '#000000',
  },
}

SCSS

$custom: #511d8b;
$custom-light: #885fae;
$custom-dark: #000000;

JSON

{
  "hex": "#511d8b",
  "rgb": {
    "r": 81,
    "g": 29,
    "b": 139
  },
  "hsl": {
    "h": 268.364,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.37626,
    "c": 0.1679,
    "h": 299.5
  },
  "luminance": 0.04492
}

Semantic roles & 50–950 ramp

primary

#511D8B

secondary

#85BB49

accent

#E83F99

background

#F8F5FA

surface

#F0EAF4

border

#CBC6CE

text

#0C0510

muted

#7D797F

Preview Lab

Preview with #511D8B

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

Preview Lab → · Contrast checker → · Palette generator →