#511C81#511C81

#511C81 is a dark, vivid violet. Relative luminance 0.042; OKLCH L 36.6% C 0.158 H 303.0°. Best body text is #FFFFFF at 11.46:1 contrast (WCAG AA passes).

Color values

HEX	#511C81
RGB	rgb(81, 28, 129)
HSL	hsl(271, 64%, 31%)
HSV	hsv(271, 78%, 51%)
CMYK	cmyk(37.2%, 78.3%, 0%, 49.4%)
CIE-LAB	lab(24.21, 43.69, -46.52)
CIE-LCH	lch(24.21, 63.82, 313.20°)
OKLab	oklab(36.64% 0.0862 -0.1326)
OKLCH	oklch(36.64% 0.158 303)
XYZ	xyz(7.7701, 4.1648, 21.1592)
Luminance	0.0416 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 3.68

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511C81 #4C811C

analogous

#1E1C81 #511C81 #811C7E

triadic

#511C81 #81511C #1C8151

tetradic

#511C81 #811E1C #4C811C #1C7E81

square

#511C81 #811E1C #4C811C #1C7E81

split-complementary

#511C81 #7E811C #1C811E

monochromatic

#12061C #31114F #511C81 #7127B3 #8F42D6

Accessibility & contrast

On white

11.46

#511C81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#511C81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511C81

11.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511C81	#FFFFFF	#000000	##FFFFFF
##511C81	1.00	11.46	1.83	11.46
#FFFFFF	11.46	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003984

Deuteranopia (green-blind)

#00397F

Tritanopia (blue-blind)

#47364D

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #511c81;
/* rgb */ color: rgb(81, 28, 129);
/* oklch */ color: oklch(36.6% 0.158 303.0);

Tailwind

colors: {
  custom: {
    50: '#875ea6',
    500: '#511c81',
    950: '#000000',
  },
}

SCSS

$custom: #511c81;
$custom-light: #875ea6;
$custom-dark: #000000;

JSON

{
  "hex": "#511c81",
  "rgb": {
    "r": 81,
    "g": 28,
    "b": 129
  },
  "hsl": {
    "h": 271.485,
    "s": 64.331,
    "l": 30.784
  },
  "oklch": {
    "l": 0.36636,
    "c": 0.15821,
    "h": 303
  },
  "luminance": 0.04165
}

Semantic roles & 50–950 ramp

primary

#511C81

secondary

#7AB444

accent

#E74090

background

#F8F5FA

surface

#F0E9F4

border

#CBC5CE

text

#0C050F

muted

#7D797F

Preview Lab

Preview with #511C81

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

Preview Lab → · Contrast checker → · Palette generator →