#5581EC#5581EC

#5581EC is a light, vivid blue. Relative luminance 0.237; OKLCH L 62.5% C 0.168 H 265.1°. Best body text is #000000 at 5.74:1 contrast (WCAG AA passes).

Color values

HEX	#5581EC
RGB	rgb(85, 129, 236)
HSL	hsl(223, 80%, 63%)
HSV	hsv(223, 64%, 93%)
CMYK	cmyk(64%, 45.3%, 0%, 7.5%)
CIE-LAB	lab(55.77, 18.23, -58.59)
CIE-LCH	lch(55.77, 61.36, 287.28°)
OKLab	oklab(62.5% -0.0144 -0.1675)
OKLCH	oklch(62.5% 0.168 265.1)
XYZ	xyz(26.7316, 23.6855, 82.5036)
Luminance	0.2369 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5581EC #ECC055

analogous

#55CCEC #5581EC #7555EC

triadic

#5581EC #EC5581 #81EC55

tetradic

#5581EC #EC55CC #ECC055 #55EC75

square

#5581EC #EC55CC #ECC055 #55EC75

split-complementary

#5581EC #EC7555 #CCEC55

monochromatic

#1442B3 #1E58E6 #5581EC #8CAAF2 #C3D3F8

Accessibility & contrast

On white

3.66

#5581EC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.74

#5581EC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5581EC

5.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5581EC	#FFFFFF	#000000	##000000
##5581EC	1.00	3.66	5.74	5.74
#FFFFFF	3.66	1.00	21.00	21.00
#000000	5.74	21.00	1.00	1.00
##000000	5.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C8DF0

Deuteranopia (green-blind)

#317FEA

Tritanopia (blue-blind)

#009AAB

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #5581ec;
/* rgb */ color: rgb(85, 129, 236);
/* oklch */ color: oklch(62.5% 0.168 265.1);

Tailwind

colors: {
  custom: {
    50: '#93a5f3',
    500: '#5581ec',
    950: '#000000',
  },
}

SCSS

$custom: #5581ec;
$custom-light: #93a5f3;
$custom-dark: #000000;

JSON

{
  "hex": "#5581ec",
  "rgb": {
    "r": 85,
    "g": 129,
    "b": 236
  },
  "hsl": {
    "h": 222.517,
    "s": 79.894,
    "l": 62.941
  },
  "oklch": {
    "l": 0.62503,
    "c": 0.16812,
    "h": 265.1
  },
  "luminance": 0.23688
}

Semantic roles & 50–950 ramp

primary

#5581EC

secondary

#EADAB3

accent

#9F09DC

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0E0F17

muted

#7E7F85

Preview Lab

Preview with #5581EC

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

Preview Lab → · Contrast checker → · Palette generator →