#511D8E#511D8E

#511D8E is a dark, vivid violet. Relative luminance 0.046; OKLCH L 37.9% C 0.171 H 298.6°. Best body text is #FFFFFF at 10.96:1 contrast (WCAG AA passes).

Color values

HEX	#511D8E
RGB	rgb(81, 29, 142)
HSL	hsl(268, 66%, 34%)
HSV	hsv(268, 80%, 56%)
CMYK	cmyk(43%, 79.6%, 0%, 44.3%)
CIE-LAB	lab(25.51, 46.55, -52.54)
CIE-LCH	lch(25.51, 70.19, 311.54°)
OKLab	oklab(37.9% 0.0818 -0.1503)
OKLCH	oklch(37.9% 0.171 298.6)
XYZ	xyz(8.7139, 4.5809, 26.0110)
Luminance	0.0458 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511D8E #5A8E1D

analogous

#1D218E #511D8E #891D8E

triadic

#511D8E #8E511D #1D8E51

tetradic

#511D8E #8E1D21 #5A8E1D #1D8E89

square

#511D8E #8E1D21 #5A8E1D #1D8E89

split-complementary

#511D8E #8E891D #218E1D

monochromatic

#170828 #34135B #511D8E #6E27C1 #8D4BDA

Accessibility & contrast

On white

10.96

#511D8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#511D8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511D8E

10.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511D8E	#FFFFFF	#000000	##FFFFFF
##511D8E	1.00	10.96	1.92	10.96
#FFFFFF	10.96	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C91

Deuteranopia (green-blind)

#003B8C

Tritanopia (blue-blind)

#423C55

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #511d8e;
/* rgb */ color: rgb(81, 29, 142);
/* oklch */ color: oklch(37.9% 0.171 298.6);

Tailwind

colors: {
  custom: {
    50: '#8860b0',
    500: '#511d8e',
    950: '#000000',
  },
}

SCSS

$custom: #511d8e;
$custom-light: #8860b0;
$custom-dark: #000000;

JSON

{
  "hex": "#511d8e",
  "rgb": {
    "r": 81,
    "g": 29,
    "b": 142
  },
  "hsl": {
    "h": 267.611,
    "s": 66.082,
    "l": 33.529
  },
  "oklch": {
    "l": 0.37899,
    "c": 0.17114,
    "h": 298.6
  },
  "luminance": 0.04581
}

Semantic roles & 50–950 ramp

primary

#511D8E

secondary

#88BD4A

accent

#E93F9B

background

#F8F5FA

surface

#F0EAF5

border

#CBC6CF

text

#0C0511

muted

#7D7980

Preview Lab

Preview with #511D8E

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

Preview Lab → · Contrast checker → · Palette generator →