#511B7B#511B7B

#511B7B is a dark, vivid violet. Relative luminance 0.040; OKLCH L 36.0% C 0.153 H 305.4°. Best body text is #FFFFFF at 11.71:1 contrast (WCAG AA passes).

Color values

HEX	#511B7B
RGB	rgb(81, 27, 123)
HSL	hsl(274, 64%, 29%)
HSV	hsv(274, 78%, 48%)
CMYK	cmyk(34.1%, 78%, 0%, 51.8%)
CIE-LAB	lab(23.55, 42.64, -43.79)
CIE-LCH	lch(23.55, 61.12, 314.24°)
OKLab	oklab(36.01% 0.0886 -0.1246)
OKLCH	oklch(36.01% 0.153 305.4)
XYZ	xyz(7.3596, 3.9633, 19.1123)
Luminance	0.0396 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 3.92

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B7B #457B1B

analogous

#211B7B #511B7B #7B1B75

triadic

#511B7B #7B511B #1B7B51

tetradic

#511B7B #7B211B #457B1B #1B757B

square

#511B7B #7B211B #457B1B #1B757B

split-complementary

#511B7B #757B1B #1B7B21

monochromatic

#110619 #301049 #511B7B #7226AD #923CD4

Accessibility & contrast

On white

11.71

#511B7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#511B7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B7B

11.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B7B	#FFFFFF	#000000	##FFFFFF
##511B7B	1.00	11.71	1.79	11.71
#FFFFFF	11.71	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00377E

Deuteranopia (green-blind)

#003879

Tritanopia (blue-blind)

#49334A

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #511b7b;
/* rgb */ color: rgb(81, 27, 123);
/* oklch */ color: oklch(36.0% 0.153 305.4);

Tailwind

colors: {
  custom: {
    50: '#865ea2',
    500: '#511b7b',
    950: '#000000',
  },
}

SCSS

$custom: #511b7b;
$custom-light: #865ea2;
$custom-dark: #000000;

JSON

{
  "hex": "#511b7b",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 123
  },
  "hsl": {
    "h": 273.75,
    "s": 64,
    "l": 29.412
  },
  "oklch": {
    "l": 0.36014,
    "c": 0.15293,
    "h": 305.4
  },
  "luminance": 0.03963
}

Semantic roles & 50–950 ramp

primary

#511B7B

secondary

#72AF43

accent

#E7418A

background

#F8F5FA

surface

#F0E9F3

border

#CBC5CD

text

#0C050F

muted

#7D797F

Preview Lab

Preview with #511B7B

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

Preview Lab → · Contrast checker → · Palette generator →