#511B8B#511B8B

#511B8B is a dark, vivid violet. Relative luminance 0.044; OKLCH L 37.4% C 0.170 H 299.8°. Best body text is #FFFFFF at 11.17:1 contrast (WCAG AA passes).

Color values

HEX	#511B8B
RGB	rgb(81, 27, 139)
HSL	hsl(269, 67%, 33%)
HSV	hsv(269, 81%, 55%)
CMYK	cmyk(41.7%, 80.6%, 0%, 45.5%)
CIE-LAB	lab(24.94, 46.63, -51.59)
CIE-LCH	lch(24.94, 69.54, 312.11°)
OKLab	oklab(37.42% 0.0844 -0.1475)
OKLCH	oklch(37.42% 0.17 299.8)
XYZ	xyz(8.4443, 4.3972, 24.8249)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B8B #558B1B

analogous

#1B1D8B #511B8B #891B8B

triadic

#511B8B #8B511B #1B8B51

tetradic

#511B8B #8B1B1D #558B1B #1B8B89

square

#511B8B #8B1B1D #558B1B #1B8B89

split-complementary

#511B8B #8B891B #1D8B1B

monochromatic

#150725 #331158 #511B8B #6F25BE #8E45DB

Accessibility & contrast

On white

11.17

#511B8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#511B8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B8B

11.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B8B	#FFFFFF	#000000	##FFFFFF
##511B8B	1.00	11.17	1.88	11.17
#FFFFFF	11.17	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B8E

Deuteranopia (green-blind)

#003A89

Tritanopia (blue-blind)

#433A53

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #511b8b;
/* rgb */ color: rgb(81, 27, 139);
/* oklch */ color: oklch(37.4% 0.170 299.8);

Tailwind

colors: {
  custom: {
    50: '#885eae',
    500: '#511b8b',
    950: '#000000',
  },
}

SCSS

$custom: #511b8b;
$custom-light: #885eae;
$custom-dark: #000000;

JSON

{
  "hex": "#511b8b",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 139
  },
  "hsl": {
    "h": 268.929,
    "s": 67.47,
    "l": 32.549
  },
  "oklch": {
    "l": 0.37422,
    "c": 0.16994,
    "h": 299.8
  },
  "luminance": 0.04397
}

Semantic roles & 50–950 ramp

primary

#511B8B

secondary

#83BC45

accent

#EA3D97

background

#F8F5FA

surface

#F0E9F4

border

#CBC5CE

text

#0C0510

muted

#7D797F

Preview Lab

Preview with #511B8B

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

Preview Lab → · Contrast checker → · Palette generator →