#5581DD#5581DD

#5581DD is a mid, vivid blue. Relative luminance 0.229; OKLCH L 61.6% C 0.148 H 263.4°. Best body text is #000000 at 5.57:1 contrast (WCAG AA passes).

Color values

HEX	#5581DD
RGB	rgb(85, 129, 221)
HSL	hsl(221, 67%, 60%)
HSV	hsv(221, 62%, 87%)
CMYK	cmyk(61.5%, 41.6%, 0%, 13.3%)
CIE-LAB	lab(54.92, 13.15, -51.57)
CIE-LCH	lch(54.92, 53.22, 284.30°)
OKLab	oklab(61.57% -0.0169 -0.1469)
OKLCH	oklch(61.57% 0.148 263.4)
XYZ	xyz(24.6432, 22.8501, 71.5044)
Luminance	0.2285 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5581DD #DDB155

analogous

#55C5DD #5581DD #6D55DD

triadic

#5581DD #DD5581 #81DD55

tetradic

#5581DD #DD55C5 #DDB155 #55DD6D

square

#5581DD #DD55C5 #DDB155 #55DD6D

split-complementary

#5581DD #DD6D55 #C5DD55

monochromatic

#1F4699 #295ECC #5581DD #88A7E7 #BBCDF1

Accessibility & contrast

On white

3.77

#5581DD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.57

#5581DD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5581DD

5.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5581DD	#FFFFFF	#000000	##000000
##5581DD	1.00	3.77	5.57	5.57
#FFFFFF	3.77	1.00	21.00	21.00
#000000	5.57	21.00	1.00	1.00
##000000	5.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#588AE1

Deuteranopia (green-blind)

#447EDB

Tritanopia (blue-blind)

#0096A4

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #5581dd;
/* rgb */ color: rgb(85, 129, 221);
/* oklch */ color: oklch(61.6% 0.148 263.4);

Tailwind

colors: {
  custom: {
    50: '#90a5e8',
    500: '#5581dd',
    950: '#000000',
  },
}

SCSS

$custom: #5581dd;
$custom-light: #90a5e8;
$custom-dark: #000000;

JSON

{
  "hex": "#5581dd",
  "rgb": {
    "r": 85,
    "g": 129,
    "b": 221
  },
  "hsl": {
    "h": 220.588,
    "s": 66.667,
    "l": 60
  },
  "oklch": {
    "l": 0.6157,
    "c": 0.14785,
    "h": 263.4
  },
  "luminance": 0.22852
}

Semantic roles & 50–950 ramp

primary

#5581DD

secondary

#E1D0AD

accent

#B23EEA

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #5581DD

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

Preview Lab → · Contrast checker → · Palette generator →