#511781#511781

#511781 is a dark, vivid violet. Relative luminance 0.039; OKLCH L 36.1% C 0.163 H 303.7°. Best body text is #FFFFFF at 11.74:1 contrast (WCAG AA passes).

Color values

HEX	#511781
RGB	rgb(81, 23, 129)
HSL	hsl(273, 70%, 30%)
HSV	hsv(273, 82%, 51%)
CMYK	cmyk(37.2%, 82.2%, 0%, 49.4%)
CIE-LAB	lab(23.50, 45.75, -47.68)
CIE-LCH	lch(23.50, 66.08, 313.81°)
OKLab	oklab(36.14% 0.0906 -0.136)
OKLCH	oklch(36.14% 0.163 303.7)
XYZ	xyz(7.6613, 3.9471, 21.1229)
Luminance	0.0395 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 2.90

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511781 #478117

analogous

#1C1781 #511781 #81177C

triadic

#511781 #815117 #178151

tetradic

#511781 #811C17 #478117 #177C81

square

#511781 #811C17 #478117 #177C81

split-complementary

#511781 #7C8117 #17811C

monochromatic

#10051A #300E4D #511781 #7220B5 #9137DB

Accessibility & contrast

On white

11.74

#511781 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#511781 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511781

11.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511781	#FFFFFF	#000000	##FFFFFF
##511781	1.00	11.74	1.79	11.74
#FFFFFF	11.74	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003784

Deuteranopia (green-blind)

#00387F

Tritanopia (blue-blind)

#47344C

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #511781;
/* rgb */ color: rgb(81, 23, 129);
/* oklch */ color: oklch(36.1% 0.163 303.7);

Tailwind

colors: {
  custom: {
    50: '#875ca6',
    500: '#511781',
    950: '#000000',
  },
}

SCSS

$custom: #511781;
$custom-light: #875ca6;
$custom-dark: #000000;

JSON

{
  "hex": "#511781",
  "rgb": {
    "r": 81,
    "g": 23,
    "b": 129
  },
  "hsl": {
    "h": 272.83,
    "s": 69.737,
    "l": 29.804
  },
  "oklch": {
    "l": 0.36137,
    "c": 0.16345,
    "h": 303.7
  },
  "luminance": 0.03947
}

Semantic roles & 50–950 ramp

primary

#511781

secondary

#74B53E

accent

#ED3B8C

background

#F8F5FA

surface

#F0E9F4

border

#CBC5CE

text

#0C040F

muted

#7D797F

Preview Lab

Preview with #511781

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

Preview Lab → · Contrast checker → · Palette generator →