#511C8E#511C8E

#511C8E is a dark, vivid violet. Relative luminance 0.045; OKLCH L 37.8% C 0.172 H 298.7°. Best body text is #FFFFFF at 11.01:1 contrast (WCAG AA passes).

Color values

HEX	#511C8E
RGB	rgb(81, 28, 142)
HSL	hsl(268, 67%, 33%)
HSV	hsv(268, 80%, 56%)
CMYK	cmyk(43%, 80.3%, 0%, 44.3%)
CIE-LAB	lab(25.36, 46.97, -52.77)
CIE-LCH	lch(25.36, 70.65, 311.67°)
OKLab	oklab(37.8% 0.0826 -0.151)
OKLCH	oklch(37.8% 0.172 298.7)
XYZ	xyz(8.6898, 4.5327, 26.0030)
Luminance	0.0453 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511C8E #598E1C

analogous

#1C208E #511C8E #8A1C8E

triadic

#511C8E #8E511C #1C8E51

tetradic

#511C8E #8E1C20 #598E1C #1C8E8A

square

#511C8E #8E1C20 #598E1C #1C8E8A

split-complementary

#511C8E #8E8A1C #208E1C

monochromatic

#170828 #34125B #511C8E #6E26C1 #8D49DB

Accessibility & contrast

On white

11.01

#511C8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#511C8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511C8E

11.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511C8E	#FFFFFF	#000000	##FFFFFF
##511C8E	1.00	11.01	1.91	11.01
#FFFFFF	11.01	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C91

Deuteranopia (green-blind)

#003B8C

Tritanopia (blue-blind)

#423B55

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #511c8e;
/* rgb */ color: rgb(81, 28, 142);
/* oklch */ color: oklch(37.8% 0.172 298.7);

Tailwind

colors: {
  custom: {
    50: '#885fb0',
    500: '#511c8e',
    950: '#000000',
  },
}

SCSS

$custom: #511c8e;
$custom-light: #885fb0;
$custom-dark: #000000;

JSON

{
  "hex": "#511c8e",
  "rgb": {
    "r": 81,
    "g": 28,
    "b": 142
  },
  "hsl": {
    "h": 267.895,
    "s": 67.059,
    "l": 33.333
  },
  "oklch": {
    "l": 0.37797,
    "c": 0.17214,
    "h": 298.7
  },
  "luminance": 0.04533
}

Semantic roles & 50–950 ramp

primary

#511C8E

secondary

#87BD49

accent

#EA3E9A

background

#F8F5FA

surface

#F0EAF5

border

#CBC6CF

text

#0C0511

muted

#7D7980

Preview Lab

Preview with #511C8E

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

Preview Lab → · Contrast checker → · Palette generator →