#5581EF#5581EF

#5581EF is a light, vivid blue. Relative luminance 0.239; OKLCH L 62.7% C 0.172 H 265.4°. Best body text is #000000 at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#5581EF
RGB	rgb(85, 129, 239)
HSL	hsl(223, 83%, 64%)
HSV	hsv(223, 64%, 94%)
CMYK	cmyk(64.4%, 46%, 0%, 6.3%)
CIE-LAB	lab(55.95, 19.25, -59.97)
CIE-LCH	lch(55.95, 62.99, 287.80°)
OKLab	oklab(62.7% -0.0139 -0.1716)
OKLCH	oklch(62.7% 0.172 265.4)
XYZ	xyz(27.1711, 23.8613, 84.8184)
Luminance	0.2386 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5581EF #EFC355

analogous

#55CEEF #5581EF #7655EF

triadic

#5581EF #EF5581 #81EF55

tetradic

#5581EF #EF55CE #EFC355 #55EF76

square

#5581EF #EF55CE #EFC355 #55EF76

split-complementary

#5581EF #EF7655 #CEEF55

monochromatic

#1141B8 #1D58EA #5581EF #8DAAF4 #C5D4FA

Accessibility & contrast

On white

3.64

#5581EF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.77

#5581EF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5581EF

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5581EF	#FFFFFF	#000000	##000000
##5581EF	1.00	3.64	5.77	5.77
#FFFFFF	3.64	1.00	21.00	21.00
#000000	5.77	21.00	1.00	1.00
##000000	5.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A8EF3

Deuteranopia (green-blind)

#2C7FED

Tritanopia (blue-blind)

#009AAC

Achromatopsia (no color)

#868686

Design tokens & code

CSS

--color: #5581ef;
/* rgb */ color: rgb(85, 129, 239);
/* oklch */ color: oklch(62.7% 0.172 265.4);

Tailwind

colors: {
  custom: {
    50: '#93a5f5',
    500: '#5581ef',
    950: '#000000',
  },
}

SCSS

$custom: #5581ef;
$custom-light: #93a5f5;
$custom-dark: #000000;

JSON

{
  "hex": "#5581ef",
  "rgb": {
    "r": 85,
    "g": 129,
    "b": 239
  },
  "hsl": {
    "h": 222.857,
    "s": 82.796,
    "l": 63.529
  },
  "oklch": {
    "l": 0.62695,
    "c": 0.17213,
    "h": 265.4
  },
  "luminance": 0.23864
}

Semantic roles & 50–950 ramp

primary

#5581EF

secondary

#EBDCB5

accent

#A106DF

background

#F9FAFF

surface

#F2F4FE

border

#CCCED6

text

#0E0F17

muted

#7E7F85

Preview Lab

Preview with #5581EF

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

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