#5581E4#5581E4

#5581E4 is a mid, vivid blue. Relative luminance 0.232; OKLCH L 62.0% C 0.157 H 264.3°. Best body text is #000000 at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#5581E4
RGB	rgb(85, 129, 228)
HSL	hsl(222, 73%, 61%)
HSV	hsv(222, 63%, 89%)
CMYK	cmyk(62.7%, 43.4%, 0%, 10.6%)
CIE-LAB	lab(55.31, 15.51, -54.87)
CIE-LCH	lch(55.31, 57.02, 285.79°)
OKLab	oklab(62% -0.0157 -0.1566)
OKLCH	oklch(62% 0.157 264.3)
XYZ	xyz(25.5953, 23.2309, 76.5189)
Luminance	0.2323 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5581E4 #E4B855

analogous

#55C9E4 #5581E4 #7155E4

triadic

#5581E4 #E45581 #81E455

tetradic

#5581E4 #E455C9 #E4B855 #55E471

square

#5581E4 #E455C9 #E4B855 #55E471

split-complementary

#5581E4 #E47155 #C9E455

monochromatic

#1A45A4 #235BD9 #5581E4 #8AA8EC #BFCFF5

Accessibility & contrast

On white

3.72

#5581E4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.65

#5581E4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5581E4

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5581E4	#FFFFFF	#000000	##000000
##5581E4	1.00	3.72	5.65	5.65
#FFFFFF	3.72	1.00	21.00	21.00
#000000	5.65	21.00	1.00	1.00
##000000	5.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#538BE8

Deuteranopia (green-blind)

#3C7EE2

Tritanopia (blue-blind)

#0098A7

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #5581e4;
/* rgb */ color: rgb(85, 129, 228);
/* oklch */ color: oklch(62.0% 0.157 264.3);

Tailwind

colors: {
  custom: {
    50: '#91a5ed',
    500: '#5581e4',
    950: '#000000',
  },
}

SCSS

$custom: #5581e4;
$custom-light: #91a5ed;
$custom-dark: #000000;

JSON

{
  "hex": "#5581e4",
  "rgb": {
    "r": 85,
    "g": 129,
    "b": 228
  },
  "hsl": {
    "h": 221.538,
    "s": 72.589,
    "l": 61.373
  },
  "oklch": {
    "l": 0.61999,
    "c": 0.15734,
    "h": 264.3
  },
  "luminance": 0.23233
}

Semantic roles & 50–950 ramp

primary

#5581E4

secondary

#E5D5B0

accent

#9811D5

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #5581E4

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

Preview Lab → · Contrast checker → · Palette generator →