#511B71#511B71

#511B71 is a dark, vivid violet. Relative luminance 0.037; OKLCH L 35.2% C 0.142 H 309.6°. Best body text is #FFFFFF at 12.03:1 contrast (WCAG AA passes).

Color values

HEX	#511B71
RGB	rgb(81, 27, 113)
HSL	hsl(278, 61%, 27%)
HSV	hsv(278, 76%, 44%)
CMYK	cmyk(28.3%, 76.1%, 0%, 55.7%)
CIE-LAB	lab(22.74, 40.22, -38.70)
CIE-LCH	lch(22.74, 55.82, 316.10°)
OKLab	oklab(35.19% 0.0906 -0.1097)
OKLCH	oklch(35.19% 0.142 309.6)
XYZ	xyz(6.7653, 3.7256, 15.9823)
Luminance	0.0372 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B71 #3B711B

analogous

#261B71 #511B71 #711B66

triadic

#511B71 #71511B #1B7151

tetradic

#511B71 #71261B #3B711B #1B6671

square

#511B71 #71261B #3B711B #1B6671

split-complementary

#511B71 #66711B #1B7126

monochromatic

#120619 #2E0F40 #511B71 #7427A2 #9737CF

Accessibility & contrast

On white

12.03

#511B71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#511B71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B71

12.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B71	#FFFFFF	#000000	##FFFFFF
##511B71	1.00	12.03	1.75	12.03
#FFFFFF	12.03	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003473

Deuteranopia (green-blind)

#07376F

Tritanopia (blue-blind)

#4C2F44

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #511b71;
/* rgb */ color: rgb(81, 27, 113);
/* oklch */ color: oklch(35.2% 0.142 309.6);

Tailwind

colors: {
  custom: {
    50: '#855d9a',
    500: '#511b71',
    950: '#000000',
  },
}

SCSS

$custom: #511b71;
$custom-light: #855d9a;
$custom-dark: #000000;

JSON

{
  "hex": "#511b71",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 113
  },
  "hsl": {
    "h": 277.674,
    "s": 61.429,
    "l": 27.451
  },
  "oklch": {
    "l": 0.3519,
    "c": 0.14228,
    "h": 309.6
  },
  "luminance": 0.03725
}

Semantic roles & 50–950 ramp

primary

#511B71

secondary

#67A642

accent

#E5437F

background

#F8F5F9

surface

#F0E9F2

border

#CBC5CC

text

#0B040E

muted

#7C797E

Preview Lab

Preview with #511B71

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

Preview Lab → · Contrast checker → · Palette generator →