#511B7E#511B7E

#511B7E is a dark, vivid violet. Relative luminance 0.040; OKLCH L 36.3% C 0.156 H 304.3°. Best body text is #FFFFFF at 11.62:1 contrast (WCAG AA passes).

Color values

HEX	#511B7E
RGB	rgb(81, 27, 126)
HSL	hsl(273, 65%, 30%)
HSV	hsv(273, 79%, 49%)
CMYK	cmyk(35.7%, 78.6%, 0%, 50.6%)
CIE-LAB	lab(23.80, 43.38, -45.29)
CIE-LCH	lch(23.80, 62.71, 313.77°)
OKLab	oklab(36.27% 0.0879 -0.129)
OKLCH	oklch(36.27% 0.156 304.3)
XYZ	xyz(7.5503, 4.0396, 20.1166)
Luminance	0.0404 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 3.67

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B7E #487E1B

analogous

#1F1B7E #511B7E #7E1B7A

triadic

#511B7E #7E511B #1B7E51

tetradic

#511B7E #7E1F1B #487E1B #1B7A7E

square

#511B7E #7E1F1B #487E1B #1B7A7E

split-complementary

#511B7E #7A7E1B #1B7E1F

monochromatic

#100519 #31104C #511B7E #7126B0 #913ED6

Accessibility & contrast

On white

11.62

#511B7E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#511B7E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B7E

11.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B7E	#FFFFFF	#000000	##FFFFFF
##511B7E	1.00	11.62	1.81	11.62
#FFFFFF	11.62	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003781

Deuteranopia (green-blind)

#00397C

Tritanopia (blue-blind)

#48344C

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #511b7e;
/* rgb */ color: rgb(81, 27, 126);
/* oklch */ color: oklch(36.3% 0.156 304.3);

Tailwind

colors: {
  custom: {
    50: '#875ea4',
    500: '#511b7e',
    950: '#000000',
  },
}

SCSS

$custom: #511b7e;
$custom-light: #875ea4;
$custom-dark: #000000;

JSON

{
  "hex": "#511b7e",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 126
  },
  "hsl": {
    "h": 272.727,
    "s": 64.706,
    "l": 30
  },
  "oklch": {
    "l": 0.3627,
    "c": 0.15611,
    "h": 304.3
  },
  "luminance": 0.0404
}

Semantic roles & 50–950 ramp

primary

#511B7E

secondary

#75B243

accent

#E8408C

background

#F8F5FA

surface

#F0E9F4

border

#CBC5CE

text

#0C050F

muted

#7D797F

Preview Lab

Preview with #511B7E

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

Preview Lab → · Contrast checker → · Palette generator →