#511B8E#511B8E

#511B8E is a dark, vivid violet. Relative luminance 0.045; OKLCH L 37.7% C 0.173 H 298.8°. Best body text is #FFFFFF at 11.07:1 contrast (WCAG AA passes).

Color values

HEX	#511B8E
RGB	rgb(81, 27, 142)
HSL	hsl(268, 68%, 33%)
HSV	hsv(268, 81%, 56%)
CMYK	cmyk(43%, 81%, 0%, 44.3%)
CIE-LAB	lab(25.22, 47.38, -53.01)
CIE-LCH	lch(25.22, 71.10, 311.79°)
OKLab	oklab(37.7% 0.0834 -0.1517)
OKLCH	oklch(37.7% 0.173 298.8)
XYZ	xyz(8.6665, 4.4861, 25.9952)
Luminance	0.0449 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#511B8E #588E1B

analogous

#1B1E8E #511B8E #8A1B8E

triadic

#511B8E #8E511B #1B8E51

tetradic

#511B8E #8E1B1E #588E1B #1B8E8A

square

#511B8E #8E1B1E #588E1B #1B8E8A

split-complementary

#511B8E #8E8A1B #1E8E1B

monochromatic

#160727 #34115B #511B8E #6E25C1 #8D47DC

Accessibility & contrast

On white

11.07

#511B8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#511B8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #511B8E

11.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##511B8E	#FFFFFF	#000000	##FFFFFF
##511B8E	1.00	11.07	1.90	11.07
#FFFFFF	11.07	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.07	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: #511b8e;
/* rgb */ color: rgb(81, 27, 142);
/* oklch */ color: oklch(37.7% 0.173 298.8);

Tailwind

colors: {
  custom: {
    50: '#885fb0',
    500: '#511b8e',
    950: '#000000',
  },
}

SCSS

$custom: #511b8e;
$custom-light: #885fb0;
$custom-dark: #000000;

JSON

{
  "hex": "#511b8e",
  "rgb": {
    "r": 81,
    "g": 27,
    "b": 142
  },
  "hsl": {
    "h": 268.174,
    "s": 68.047,
    "l": 33.137
  },
  "oklch": {
    "l": 0.37697,
    "c": 0.17312,
    "h": 298.8
  },
  "luminance": 0.04486
}

Semantic roles & 50–950 ramp

primary

#511B8E

secondary

#86BE47

accent

#EB3D99

background

#F8F5FA

surface

#F0EAF5

border

#CBC6CF

text

#0C0511

muted

#7D7980

Preview Lab

Preview with #511B8E

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

Preview Lab → · Contrast checker → · Palette generator →