#511F8B#511F8B

#511F8B is a dark, vivid violet. Relative luminance 0.046; OKLCH L 37.8% C 0.166 H 299.2°. Best body text is #FFFFFF at 10.95:1 contrast (WCAG AA passes).

Color values

HEX	#511F8B
RGB	rgb(81, 31, 139)
HSL	hsl(268, 64%, 33%)
HSV	hsv(268, 78%, 55%)
CMYK	cmyk(41.7%, 77.7%, 0%, 45.5%)
CIE-LAB	lab(25.54, 44.90, -50.61)
CIE-LCH	lch(25.54, 67.66, 311.58°)
OKLab	oklab(37.84% 0.0809 -0.1447)
OKLCH	oklch(37.84% 0.166 299.2)
XYZ	xyz(8.5423, 4.5933, 24.8576)
Luminance	0.0459 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511F8B #598B1F

analogous

#1F238B #511F8B #871F8B

triadic

#511F8B #8B511F #1F8B51

tetradic

#511F8B #8B1F23 #598B1F #1F8B87

square

#511F8B #8B1F23 #598B1F #1F8B87

split-complementary

#511F8B #8B871F #238B1F

monochromatic

#170927 #341459 #511F8B #6E2ABD #8D4DD7

Accessibility & contrast

On white

10.95

#511F8B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#511F8B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511F8B

10.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511F8B	#FFFFFF	#000000	##FFFFFF
##511F8B	1.00	10.95	1.92	10.95
#FFFFFF	10.95	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C8E

Deuteranopia (green-blind)

#003C89

Tritanopia (blue-blind)

#433B54

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #511f8b;
/* rgb */ color: rgb(81, 31, 139);
/* oklch */ color: oklch(37.8% 0.166 299.2);

Tailwind

colors: {
  custom: {
    50: '#8860ae',
    500: '#511f8b',
    950: '#000000',
  },
}

SCSS

$custom: #511f8b;
$custom-light: #8860ae;
$custom-dark: #000000;

JSON

{
  "hex": "#511f8b",
  "rgb": {
    "r": 81,
    "g": 31,
    "b": 139
  },
  "hsl": {
    "h": 267.778,
    "s": 63.529,
    "l": 33.333
  },
  "oklch": {
    "l": 0.37842,
    "c": 0.16576,
    "h": 299.2
  },
  "luminance": 0.04593
}

Semantic roles & 50–950 ramp

primary

#511F8B

secondary

#87BA4C

accent

#E7419A

background

#F8F5FA

surface

#F0EAF4

border

#CBC6CE

text

#0C0510

muted

#7D797F

Preview Lab

Preview with #511F8B

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

Preview Lab → · Contrast checker → · Palette generator →