#511B75#511B75

#511B75 is a dark, vivid violet. Relative luminance 0.038; OKLCH L 35.5% C 0.147 H 307.8°. Best body text is #FFFFFF at 11.91:1 contrast (WCAG AA passes).

Color values

HEX	#511B75
RGB	rgb(81, 27, 117)
HSL	hsl(276, 63%, 28%)
HSV	hsv(276, 77%, 46%)
CMYK	cmyk(30.8%, 76.9%, 0%, 54.1%)
CIE-LAB	lab(23.06, 41.18, -40.76)
CIE-LCH	lch(23.06, 57.94, 315.29°)
OKLab	oklab(35.51% 0.0899 -0.1157)
OKLCH	oklch(35.51% 0.147 307.8)
XYZ	xyz(6.9955, 3.8177, 17.1945)
Luminance	0.0382 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B75 #3F751B

analogous

#241B75 #511B75 #751B6C

triadic

#511B75 #75511B #1B7551

tetradic

#511B75 #75241B #3F751B #1B6C75

square

#511B75 #75241B #3F751B #1B6C75

split-complementary

#511B75 #6C751B #1B7524

monochromatic

#110619 #2F1043 #511B75 #7326A7 #9439D1

Accessibility & contrast

On white

11.91

#511B75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.76

#511B75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B75

11.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B75	#FFFFFF	#000000	##FFFFFF
##511B75	1.00	11.91	1.76	11.91
#FFFFFF	11.91	1.00	21.00	1.00
#000000	1.76	21.00	1.00	21.00
##FFFFFF	11.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003578

Deuteranopia (green-blind)

#003773

Tritanopia (blue-blind)

#4B3046

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #511b75;
/* rgb */ color: rgb(81, 27, 117);
/* oklch */ color: oklch(35.5% 0.147 307.8);

Tailwind

colors: {
  custom: {
    50: '#865d9d',
    500: '#511b75',
    950: '#000000',
  },
}

SCSS

$custom: #511b75;
$custom-light: #865d9d;
$custom-dark: #000000;

JSON

{
  "hex": "#511b75",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 117
  },
  "hsl": {
    "h": 276,
    "s": 62.5,
    "l": 28.235
  },
  "oklch": {
    "l": 0.35514,
    "c": 0.14654,
    "h": 307.8
  },
  "luminance": 0.03818
}

Semantic roles & 50–950 ramp

primary

#511B75

secondary

#6CA942

accent

#E64284

background

#F8F5F9

surface

#F0E9F2

border

#CBC5CC

text

#0C040E

muted

#7D797E

Preview Lab

Preview with #511B75

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

Preview Lab → · Contrast checker → · Palette generator →