#5581DC#5581DC

#5581DC is a mid, vivid blue. Relative luminance 0.228; OKLCH L 61.5% C 0.146 H 263.3°. Best body text is #000000 at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#5581DC
RGB	rgb(85, 129, 220)
HSL	hsl(220, 66%, 60%)
HSV	hsv(220, 61%, 86%)
CMYK	cmyk(61.4%, 41.4%, 0%, 13.7%)
CIE-LAB	lab(54.86, 12.81, -51.10)
CIE-LCH	lch(54.86, 52.68, 284.08°)
OKLab	oklab(61.51% -0.0171 -0.1455)
OKLCH	oklch(61.51% 0.147 263.3)
XYZ	xyz(24.5104, 22.7969, 70.8049)
Luminance	0.2280 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5581DC #DCB055

analogous

#55C5DC #5581DC #6C55DC

triadic

#5581DC #DC5581 #81DC55

tetradic

#5581DC #DC55C5 #DCB055 #55DC6C

square

#5581DC #DC55C5 #DCB055 #55DC6C

split-complementary

#5581DC #DC6C55 #C5DC55

monochromatic

#1F4697 #2A5ECA #5581DC #88A7E6 #BBCCF1

Accessibility & contrast

On white

3.78

#5581DC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.56

#5581DC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5581DC

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5581DC	#FFFFFF	#000000	##000000
##5581DC	1.00	3.78	5.56	5.56
#FFFFFF	3.78	1.00	21.00	21.00
#000000	5.56	21.00	1.00	1.00
##000000	5.56	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#588AE0

Deuteranopia (green-blind)

#457EDA

Tritanopia (blue-blind)

#0096A4

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #5581dc;
/* rgb */ color: rgb(85, 129, 220);
/* oklch */ color: oklch(61.5% 0.146 263.3);

Tailwind

colors: {
  custom: {
    50: '#90a5e7',
    500: '#5581dc',
    950: '#000000',
  },
}

SCSS

$custom: #5581dc;
$custom-light: #90a5e7;
$custom-dark: #000000;

JSON

{
  "hex": "#5581dc",
  "rgb": {
    "r": 85,
    "g": 129,
    "b": 220
  },
  "hsl": {
    "h": 220.444,
    "s": 65.854,
    "l": 59.804
  },
  "oklch": {
    "l": 0.6151,
    "c": 0.1465,
    "h": 263.3
  },
  "luminance": 0.22799
}

Semantic roles & 50–950 ramp

primary

#5581DC

secondary

#E0CFAC

accent

#B13FE9

background

#F9FAFE

surface

#F2F4FC

border

#CCCED5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #5581DC

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

Preview Lab → · Contrast checker → · Palette generator →