#581B81#581B81

#581B81 is a dark, vivid violet. Relative luminance 0.044; OKLCH L 37.5% C 0.161 H 307.3°. Best body text is #FFFFFF at 11.12:1 contrast (WCAG AA passes).

Color values

HEX	#581B81
RGB	rgb(88, 27, 129)
HSL	hsl(276, 65%, 31%)
HSV	hsv(276, 79%, 51%)
CMYK	cmyk(31.8%, 79.1%, 0%, 49.4%)
CIE-LAB	lab(25.09, 45.42, -45.04)
CIE-LCH	lch(25.09, 63.97, 315.24°)
OKLab	oklab(37.47% 0.0976 -0.128)
OKLCH	oklch(37.47% 0.161 307.3)
XYZ	xyz(8.3780, 4.4437, 21.1810)
Luminance	0.0444 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Indigo

#4B0082

ΔE00 4.23

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#581B81 #44811B

analogous

#251B81 #581B81 #811B77

triadic

#581B81 #81581B #1B8158

tetradic

#581B81 #81251B #44811B #1B7781

square

#581B81 #81251B #44811B #1B7781

split-complementary

#581B81 #77811B #1B8125

monochromatic

#13061C #35104E #581B81 #7B26B4 #9A3FD7

Accessibility & contrast

On white

11.12

#581B81 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#581B81 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #581B81

11.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##581B81	#FFFFFF	#000000	##FFFFFF
##581B81	1.00	11.12	1.89	11.12
#FFFFFF	11.12	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003984

Deuteranopia (green-blind)

#003C7F

Tritanopia (blue-blind)

#51344D

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #581b81;
/* rgb */ color: rgb(88, 27, 129);
/* oklch */ color: oklch(37.5% 0.161 307.3);

Tailwind

colors: {
  custom: {
    50: '#8c5fa6',
    500: '#581b81',
    950: '#000000',
  },
}

SCSS

$custom: #581b81;
$custom-light: #8c5fa6;
$custom-dark: #000000;

JSON

{
  "hex": "#581b81",
  "rgb": {
    "r": 88,
    "g": 27,
    "b": 129
  },
  "hsl": {
    "h": 275.882,
    "s": 65.385,
    "l": 30.588
  },
  "oklch": {
    "l": 0.3747,
    "c": 0.161,
    "h": 307.3
  },
  "luminance": 0.04444
}

Semantic roles & 50–950 ramp

primary

#581B81

secondary

#71B543

accent

#E83F83

background

#F8F5FA

surface

#F0EAF4

border

#CBC6CE

text

#0C050F

muted

#7D797F

Preview Lab

Preview with #581B81

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

Preview Lab → · Contrast checker → · Palette generator →