Change element color to black or white based on background color

AntunCrnja

I'm building a new website and I want to change the logo color (ie ) position: fixedbased on the background color or image .

I found an example on this site . You can see how the logo and certain elements change color based on the background.

body {
  margin: 0;
}

.logo img {
  position: fixed;
  width: 100px;
}

.black {
  background: black;
  width: 100%;
  height: 400px;
}

.yellow {
  background: yellow;
  width: 100%;
  height: 400px;
}

.red {
  background: red;
  width: 100%;
  height: 400px;
}

.imageBg {
  background: url(https://images.pexels.com/photos/2208895/pexels-photo-2208895.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260);
  width: 100%;
  height: 400px;
  background-size: cover;
}
<div class="logo">
  <img src="http://www.clker.com/cliparts/n/y/a/M/G/h/fdl-logo.svg">
</div>

<!-- change logo color to: black -->
<section class="yellow"></section>

<!-- change logo color to: white -->
<section class="black"></section>

<!-- change logo color to: white -->
<section class="red"></section>

<!-- change logo color to: black -->
<section class="yellow"></section>

<!-- change logo color to: white -->
<section class="imageBg"></section>

Here is my fiddle : https://jsfiddle.net/o0gnayht/

Udetetis

By using, filter:invert()you can change the logo color from black to white. If you use jquery in the onscrollevent , you can call filterbased on the position closest to the topsection

$(window).scroll(function ()
{
	var windowTop = Math.max($('body').scrollTop(), $('html').scrollTop());
	$('section').each(function (index)
	{
		if (windowTop > ($(this).position().top - 100))
		{
			if ($(this).hasClass('yellow'))
			{
				$('.logo img').css('filter', 'invert(0)');
			}
			else
			{
				$('.logo img').css('filter', 'invert(1)');
			}
		}
	});
}).scroll();
body {
  margin: 0;
}

.logo img {
  position: fixed;
  width: 100px;
}

.black {
  background: black;
  width: 100%;
  height: 400px;
}

.yellow {
  background: yellow;
  width: 100%;
  height: 400px;
}

.red {
  background: red;
  width: 100%;
  height: 400px;
}

.imageBg {
  background: url(https://images.pexels.com/photos/2208895/pexels-photo-2208895.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260);
  width: 100%;
  height: 400px;
  background-size: cover;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="logo">
  <img src="http://www.clker.com/cliparts/n/y/a/M/G/h/fdl-logo.svg">
</div>

<!-- change logo color to: black -->
<section class="yellow"></section>

<!-- change logo color to: white -->
<section class="black"></section>

<!-- change logo color to: white -->
<section class="red"></section>

<!-- change logo color to: black -->
<section class="yellow"></section>

<!-- change logo color to: white -->
<section class="imageBg"></section>

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