#5581CC#5581CC

#5581CC is a mid, vivid blue. Relative luminance 0.220; OKLCH L 60.6% C 0.125 H 260.5°. Best body text is #000000 at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#5581CC
RGB	rgb(85, 129, 204)
HSL	hsl(218, 54%, 57%)
HSV	hsv(218, 58%, 80%)
CMYK	cmyk(58.3%, 36.8%, 0%, 20%)
CIE-LAB	lab(54.02, 7.47, -43.41)
CIE-LCH	lch(54.02, 44.05, 279.77°)
OKLab	oklab(60.58% -0.0206 -0.123)
OKLCH	oklch(60.58% 0.125 260.5)
XYZ	xyz(22.4919, 21.9895, 60.1742)
Luminance	0.2199 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#5581CC #CCA055

analogous

#55BDCC #5581CC #6555CC

triadic

#5581CC #CC5581 #81CC55

tetradic

#5581CC #CC55BD #CCA055 #55CC65

square

#5581CC #CC55BD #CCA055 #55CC65

split-complementary

#5581CC #CC6555 #BDCC55

monochromatic

#264880 #3562AF #5581CC #84A4DA #B3C7E8

Accessibility & contrast

On white

3.89

#5581CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.40

#5581CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #5581CC

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##5581CC	#FFFFFF	#000000	##000000
##5581CC	1.00	3.89	5.40	5.40
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.40	21.00	1.00	1.00
##000000	5.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6287CF

Deuteranopia (green-blind)

#527CCA

Tritanopia (blue-blind)

#00929D

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #5581cc;
/* rgb */ color: rgb(85, 129, 204);
/* oklch */ color: oklch(60.6% 0.125 260.5);

Tailwind

colors: {
  custom: {
    50: '#8ea5dc',
    500: '#5581cc',
    950: '#000000',
  },
}

SCSS

$custom: #5581cc;
$custom-light: #8ea5dc;
$custom-dark: #000000;

JSON

{
  "hex": "#5581cc",
  "rgb": {
    "r": 85,
    "g": 129,
    "b": 204
  },
  "hsl": {
    "h": 217.815,
    "s": 53.846,
    "l": 56.667
  },
  "oklch": {
    "l": 0.60578,
    "c": 0.12469,
    "h": 260.5
  },
  "luminance": 0.21991
}

Semantic roles & 50–950 ramp

primary

#5581CC

secondary

#D7C5A6

accent

#A74BDD

background

#F9FAFD

surface

#F1F4FB

border

#CBCED4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #5581CC

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

Preview Lab → · Contrast checker → · Palette generator →