#511681#511681

#511681 is a dark, vivid violet. Relative luminance 0.039; OKLCH L 36.0% C 0.164 H 303.8°. Best body text is #FFFFFF at 11.79:1 contrast (WCAG AA passes).

Color values

HEX	#511681
RGB	rgb(81, 22, 129)
HSL	hsl(273, 71%, 30%)
HSV	hsv(273, 83%, 51%)
CMYK	cmyk(37.2%, 82.9%, 0%, 49.4%)
CIE-LAB	lab(23.37, 46.12, -47.90)
CIE-LCH	lch(23.37, 66.49, 313.92°)
OKLab	oklab(36.05% 0.0914 -0.1366)
OKLCH	oklch(36.05% 0.164 303.8)
XYZ	xyz(7.6418, 3.9081, 21.1164)
Luminance	0.0391 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 2.76

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511681 #468116

analogous

#1B1681 #511681 #81167C

triadic

#511681 #815116 #168151

tetradic

#511681 #811B16 #468116 #167C81

square

#511681 #811B16 #468116 #167C81

split-complementary

#511681 #7C8116 #16811B

monochromatic

#10041A #300D4D #511681 #721FB5 #9135DD

Accessibility & contrast

On white

11.79

#511681 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#511681 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511681

11.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511681	#FFFFFF	#000000	##FFFFFF
##511681	1.00	11.79	1.78	11.79
#FFFFFF	11.79	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003684

Deuteranopia (green-blind)

#00377F

Tritanopia (blue-blind)

#47334C

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #511681;
/* rgb */ color: rgb(81, 22, 129);
/* oklch */ color: oklch(36.0% 0.164 303.8);

Tailwind

colors: {
  custom: {
    50: '#875ca6',
    500: '#511681',
    950: '#000000',
  },
}

SCSS

$custom: #511681;
$custom-light: #875ca6;
$custom-dark: #000000;

JSON

{
  "hex": "#511681",
  "rgb": {
    "r": 81,
    "g": 22,
    "b": 129
  },
  "hsl": {
    "h": 273.084,
    "s": 70.861,
    "l": 29.608
  },
  "oklch": {
    "l": 0.36046,
    "c": 0.16441,
    "h": 303.8
  },
  "luminance": 0.03908
}

Semantic roles & 50–950 ramp

primary

#511681

secondary

#73B63D

accent

#EE3A8B

background

#F8F5FA

surface

#F0E9F4

border

#CBC5CE

text

#0C040F

muted

#7D797F

Preview Lab

Preview with #511681

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

Preview Lab → · Contrast checker → · Palette generator →