#511A81#511A81

#511A81 is a dark, vivid violet. Relative luminance 0.041; OKLCH L 36.4% C 0.160 H 303.3°. Best body text is #FFFFFF at 11.57:1 contrast (WCAG AA passes).

Color values

HEX	#511A81
RGB	rgb(81, 26, 129)
HSL	hsl(272, 66%, 30%)
HSV	hsv(272, 80%, 51%)
CMYK	cmyk(37.2%, 79.8%, 0%, 49.4%)
CIE-LAB	lab(23.91, 44.54, -47.00)
CIE-LCH	lch(23.91, 64.76, 313.46°)
OKLab	oklab(36.43% 0.0881 -0.134)
OKLCH	oklch(36.43% 0.16 303.3)
XYZ	xyz(7.7242, 4.0731, 21.1439)
Luminance	0.0407 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 3.35

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511A81 #4A811A

analogous

#1D1A81 #511A81 #811A7D

triadic

#511A81 #81511A #1A8151

tetradic

#511A81 #811D1A #4A811A #1A7D81

square

#511A81 #811D1A #4A811A #1A7D81

split-complementary

#511A81 #7D811A #1A811D

monochromatic

#11051B #31104E #511A81 #7124B4 #903DD8

Accessibility & contrast

On white

11.57

#511A81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#511A81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511A81

11.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511A81	#FFFFFF	#000000	##FFFFFF
##511A81	1.00	11.57	1.81	11.57
#FFFFFF	11.57	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003884

Deuteranopia (green-blind)

#00397F

Tritanopia (blue-blind)

#47354D

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #511a81;
/* rgb */ color: rgb(81, 26, 129);
/* oklch */ color: oklch(36.4% 0.160 303.3);

Tailwind

colors: {
  custom: {
    50: '#875da6',
    500: '#511a81',
    950: '#000000',
  },
}

SCSS

$custom: #511a81;
$custom-light: #875da6;
$custom-dark: #000000;

JSON

{
  "hex": "#511a81",
  "rgb": {
    "r": 81,
    "g": 26,
    "b": 129
  },
  "hsl": {
    "h": 272.039,
    "s": 66.452,
    "l": 30.392
  },
  "oklch": {
    "l": 0.36427,
    "c": 0.16039,
    "h": 303.3
  },
  "luminance": 0.04073
}

Semantic roles & 50–950 ramp

primary

#511A81

secondary

#77B542

accent

#E93E8E

background

#F8F5FA

surface

#F0E9F4

border

#CBC5CE

text

#0C050F

muted

#7D797F

Preview Lab

Preview with #511A81

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

Preview Lab → · Contrast checker → · Palette generator →