#581B8D#581B8D

#581B8D is a dark, vivid violet. Relative luminance 0.048; OKLCH L 38.5% C 0.173 H 303.0°. Best body text is #FFFFFF at 10.73:1 contrast (WCAG AA passes).

Color values

HEX	#581B8D
RGB	rgb(88, 27, 141)
HSL	hsl(272, 68%, 33%)
HSV	hsv(272, 81%, 55%)
CMYK	cmyk(37.6%, 80.9%, 0%, 44.7%)
CIE-LAB	lab(26.10, 48.28, -50.90)
CIE-LCH	lch(26.10, 70.16, 313.49°)
OKLab	oklab(38.5% 0.0945 -0.1452)
OKLCH	oklch(38.5% 0.173 303)
XYZ	xyz(9.2230, 4.7817, 25.6312)
Luminance	0.0478 (WCAG relative)
Temperature	cool
Family	violet

Closest named colors

Royal Purple (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#581B8D #508D1B

analogous

#1F1B8D #581B8D #8D1B89

triadic

#581B8D #8D581B #1B8D58

tetradic

#581B8D #8D1F1B #508D1B #1B898D

square

#581B8D #8D1F1B #508D1B #1B898D

split-complementary

#581B8D #898D1B #1B8D1F

monochromatic

#180726 #38115A #581B8D #7825C0 #9647DC

Accessibility & contrast

On white

10.73

#581B8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#581B8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #581B8D

10.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##581B8D	#FFFFFF	#000000	##FFFFFF
##581B8D	1.00	10.73	1.96	10.73
#FFFFFF	10.73	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D90

Deuteranopia (green-blind)

#003D8B

Tritanopia (blue-blind)

#4D3A54

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #581b8d;
/* rgb */ color: rgb(88, 27, 141);
/* oklch */ color: oklch(38.5% 0.173 303.0);

Tailwind

colors: {
  custom: {
    50: '#8d5faf',
    500: '#581b8d',
    950: '#000000',
  },
}

SCSS

$custom: #581b8d;
$custom-light: #8d5faf;
$custom-dark: #000000;

JSON

{
  "hex": "#581b8d",
  "rgb": {
    "r": 88,
    "g": 27,
    "b": 141
  },
  "hsl": {
    "h": 272.105,
    "s": 67.857,
    "l": 32.941
  },
  "oklch": {
    "l": 0.38497,
    "c": 0.17326,
    "h": 303
  },
  "luminance": 0.04782
}

Semantic roles & 50–950 ramp

primary

#581B8D

secondary

#7EBD46

accent

#EB3D8E

background

#F9F5FA

surface

#F1EAF5

border

#CBC6CF

text

#0D0510

muted

#7E797F

Preview Lab

Preview with #581B8D

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

Preview Lab → · Contrast checker → · Palette generator →