How can I change the Bootstrap 4 navbar button icon color?

I have a Bootstrap website where the hamburger toggler is added when the screen size is less than 992px. The code is like so:

<button class="navbar-toggler navbar-toggler-right" 
        type="button" data-toggle="collapse" 
        data-target="#navbarSupportedContent" 
        aria-controls="navbarSupportedContent" 
        aria-expanded="false" 
        aria-label="Toggle navigation"> 
    <span class="navbar-toggler-icon"></span> 
</button>

Is there any possibility to change the color of the hamburger toggler button?

Solution 1:

The navbar-toggler-icon (hamburger) in Bootstrap 4 uses an SVG background-image. There are 2 "versions" of the toggler icon image. One for a light navbar, and one for a dark navbar...

• Use navbar-dark for a light/white toggler on darker backgrounds
• Use navbar-light for a dark/gray toggler on lighter backgrounds

// this is a black icon with 50% opacity
.navbar-light .navbar-toggler-icon {
  background-image: url("data:image/svg+xml;..");
}
// this is a white icon with 50% opacity
.navbar-dark .navbar-toggler-icon {
  background-image: url("data:image/svg+xml;..");
}

Therefore, if you want to change the color of the toggler image to something else, you can customize the icon. For example, here I set the RGB value to pink (255,102,203). Notice the stroke='rgba(255,102,203, 0.5)' value in the SVG data:

.custom-toggler .navbar-toggler-icon {
  background-image: url("data:image/svg+xml;charset=utf8,%3Csvg viewBox='0 0 32 32' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='rgba(255,102,203, 0.5)' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 8h24M4 16h24M4 24h24'/%3E%3C/svg%3E");
}

.custom-toggler.navbar-toggler {
  border-color: rgb(255,102,203);
} 

Demo http://www.codeply.com/go/4FdZGlPMNV

OFC, another option to just use an icon from another library ie: Font Awesome, etc..

Update Bootstrap 4.0.0:

As of Bootstrap 4 Beta, navbar-inverse is now navbar-dark to use on navbars with darker background colors to produce lighter link and toggler colors.

How to change Bootstrap 4 Navbar colors

Solution 2:

Use a font-awesome icon as the default icon of your navbar.

<span class="navbar-toggler-icon">   
    <i class="fas fa-bars" style="color:#fff; font-size:28px;"></i>
</span>

Or try this on old font-awesome versions:

<span class="navbar-toggler-icon">   
    <i class="fa fa-navicon" style="color:#fff; font-size:28px;"></i>
</span>

Solution 3:

You can create the toggler button with css only in a very easy way, there is no need to use any fonts in SVG or ... foramt.

Your Button:

<button 
     class="navbar-toggler collapsed" 
    data-target="#navbarsExampleDefault" 
    data-toggle="collapse">
        <span class="line"></span> 
        <span class="line"></span> 
        <span class="line"></span>
</button>

Your Button Style:

.navbar-toggler{
width: 47px;
height: 34px;
background-color: #7eb444;

}

Your horizontal line Style:

.navbar-toggler .line{
width: 100%;
float: left;
height: 2px;
background-color: #fff;
margin-bottom: 5px;

}

Demo

.navbar-toggler{
    width: 47px;
    height: 34px;
    background-color: #7eb444;
    border:none;
}
.navbar-toggler .line{
    width: 100%;
    float: left;
    height: 2px;
    background-color: #fff;
    margin-bottom: 5px;
}

<button class="navbar-toggler" data-target="#navbarsExampleDefault" data-toggle="collapse" aria-expanded="true" >
        <span class="line"></span> 
        <span class="line"></span> 
        <span class="line" style="margin-bottom: 0;"></span>
</button>

Solution 4:

If you downloaded bootstrap, go to bootstrap-4.4.1-dist/css/bootstrap.min.css

1. find the .navbar-light .navbar-toggler-icon or the .navbar-dark .navbar-toggler-icon selector

2. select the background-image attribute and its value. The snippet looks like this:

   .navbar-light .navbar-toggler-icon {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='30' height='30' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(0, 0, 0, 0.5)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
   }
   

3. copy the snippet and paste it in your custom CSS

4. change the stroke='rgba(0, 0, 0, 0.5)' value to your preferred rgba value