#511C7B#511C7B

#511C7B is a dark, vivid violet. Relative luminance 0.040; OKLCH L 36.1% C 0.152 H 305.3°. Best body text is #FFFFFF at 11.65:1 contrast (WCAG AA passes).

Color values

HEX	#511C7B
RGB	rgb(81, 28, 123)
HSL	hsl(273, 63%, 30%)
HSV	hsv(273, 77%, 48%)
CMYK	cmyk(34.1%, 77.2%, 0%, 51.8%)
CIE-LAB	lab(23.70, 42.20, -43.54)
CIE-LCH	lch(23.70, 60.63, 314.10°)
OKLab	oklab(36.12% 0.0876 -0.1239)
OKLCH	oklch(36.12% 0.152 305.3)
XYZ	xyz(7.3829, 4.0099, 19.1201)
Luminance	0.0401 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 4.08

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511C7B #467B1C

analogous

#221C7B #511C7B #7B1C76

triadic

#511C7B #7B511C #1C7B51

tetradic

#511C7B #7B221C #467B1C #1C767B

square

#511C7B #7B221C #467B1C #1C767B

split-complementary

#511C7B #767B1C #1C7B22

monochromatic

#100619 #301149 #511C7B #7227AD #913ED3

Accessibility & contrast

On white

11.65

#511C7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#511C7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511C7B

11.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511C7B	#FFFFFF	#000000	##FFFFFF
##511C7B	1.00	11.65	1.80	11.65
#FFFFFF	11.65	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00377E

Deuteranopia (green-blind)

#003979

Tritanopia (blue-blind)

#49334A

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #511c7b;
/* rgb */ color: rgb(81, 28, 123);
/* oklch */ color: oklch(36.1% 0.152 305.3);

Tailwind

colors: {
  custom: {
    50: '#865ea2',
    500: '#511c7b',
    950: '#000000',
  },
}

SCSS

$custom: #511c7b;
$custom-light: #865ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#511c7b",
  "rgb": {
    "r": 81,
    "g": 28,
    "b": 123
  },
  "hsl": {
    "h": 273.474,
    "s": 62.914,
    "l": 29.608
  },
  "oklch": {
    "l": 0.36123,
    "c": 0.15175,
    "h": 305.3
  },
  "luminance": 0.0401
}

Semantic roles & 50–950 ramp

primary

#511C7B

secondary

#73AF44

accent

#E6428A

background

#F8F5FA

surface

#F0E9F3

border

#CBC5CD

text

#0C050F

muted

#7D797F

Preview Lab

Preview with #511C7B

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

Preview Lab → · Contrast checker → · Palette generator →