#51188B#51188B

#51188B is a dark, vivid violet. Relative luminance 0.043; OKLCH L 37.1% C 0.173 H 300.1°. Best body text is #FFFFFF at 11.33:1 contrast (WCAG AA passes).

Color values

HEX	#51188B
RGB	rgb(81, 24, 139)
HSL	hsl(270, 71%, 32%)
HSV	hsv(270, 83%, 55%)
CMYK	cmyk(41.7%, 82.7%, 0%, 45.5%)
CIE-LAB	lab(24.53, 47.81, -52.26)
CIE-LCH	lch(24.53, 70.83, 312.46°)
OKLab	oklab(37.14% 0.0867 -0.1495)
OKLCH	oklch(37.14% 0.173 300.1)
XYZ	xyz(8.3790, 4.2666, 24.8032)
Luminance	0.0427 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51188B #528B18

analogous

#18198B #51188B #8B188B

triadic

#51188B #8B5118 #188B51

tetradic

#51188B #8B1819 #528B18 #188B8B

square

#51188B #8B1819 #528B18 #188B8B

split-complementary

#51188B #8B8B18 #198B18

monochromatic

#140623 #330F57 #51188B #6F21BF #8E3FDE

Accessibility & contrast

On white

11.33

#51188B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#51188B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #51188B

11.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51188B	#FFFFFF	#000000	##FFFFFF
##51188B	1.00	11.33	1.85	11.33
#FFFFFF	11.33	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A8E

Deuteranopia (green-blind)

#003989

Tritanopia (blue-blind)

#433852

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #51188b;
/* rgb */ color: rgb(81, 24, 139);
/* oklch */ color: oklch(37.1% 0.173 300.1);

Tailwind

colors: {
  custom: {
    50: '#885dae',
    500: '#51188b',
    950: '#000000',
  },
}

SCSS

$custom: #51188b;
$custom-light: #885dae;
$custom-dark: #000000;

JSON

{
  "hex": "#51188b",
  "rgb": {
    "r": 81,
    "g": 24,
    "b": 139
  },
  "hsl": {
    "h": 269.739,
    "s": 70.552,
    "l": 31.961
  },
  "oklch": {
    "l": 0.37138,
    "c": 0.17281,
    "h": 300.1
  },
  "luminance": 0.04267
}

Semantic roles & 50–950 ramp

primary

#51188B

secondary

#80BE40

accent

#ED3A95

background

#F8F5FA

surface

#F0E9F4

border

#CBC5CE

text

#0C0510

muted

#7D797F

Preview Lab

Preview with #51188B

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

Preview Lab → · Contrast checker → · Palette generator →