#511D8A#511D8A

#511D8A is a dark, vivid violet. Relative luminance 0.045; OKLCH L 37.5% C 0.167 H 299.8°. Best body text is #FFFFFF at 11.10:1 contrast (WCAG AA passes).

Color values

HEX	#511D8A
RGB	rgb(81, 29, 138)
HSL	hsl(269, 65%, 33%)
HSV	hsv(269, 79%, 54%)
CMYK	cmyk(41.3%, 79%, 0%, 45.9%)
CIE-LAB	lab(25.15, 45.53, -50.63)
CIE-LCH	lch(25.15, 68.09, 311.96°)
OKLab	oklab(37.54% 0.0829 -0.1447)
OKLCH	oklch(37.54% 0.167 299.8)
XYZ	xyz(8.4190, 4.4629, 24.4577)
Luminance	0.0446 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511D8A #568A1D

analogous

#1D208A #511D8A #871D8A

triadic

#511D8A #8A511D #1D8A51

tetradic

#511D8A #8A1D20 #568A1D #1D8A87

square

#511D8A #8A1D20 #568A1D #1D8A87

split-complementary

#511D8A #8A871D #208A1D

monochromatic

#160825 #331257 #511D8A #6F28BD #8D49D9

Accessibility & contrast

On white

11.10

#511D8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#511D8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511D8A

11.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511D8A	#FFFFFF	#000000	##FFFFFF
##511D8A	1.00	11.10	1.89	11.10
#FFFFFF	11.10	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003B8D

Deuteranopia (green-blind)

#003B88

Tritanopia (blue-blind)

#433A53

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #511d8a;
/* rgb */ color: rgb(81, 29, 138);
/* oklch */ color: oklch(37.5% 0.167 299.8);

Tailwind

colors: {
  custom: {
    50: '#885fad',
    500: '#511d8a',
    950: '#000000',
  },
}

SCSS

$custom: #511d8a;
$custom-light: #885fad;
$custom-dark: #000000;

JSON

{
  "hex": "#511d8a",
  "rgb": {
    "r": 81,
    "g": 29,
    "b": 138
  },
  "hsl": {
    "h": 268.624,
    "s": 65.269,
    "l": 32.745
  },
  "oklch": {
    "l": 0.37536,
    "c": 0.16682,
    "h": 299.8
  },
  "luminance": 0.04463
}

Semantic roles & 50–950 ramp

primary

#511D8A

secondary

#84BB48

accent

#E84098

background

#F8F5FA

surface

#F0EAF4

border

#CBC6CE

text

#0C0510

muted

#7D797F

Preview Lab

Preview with #511D8A

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

Preview Lab → · Contrast checker → · Palette generator →