title: Setting color that depends on the background
body: <p>I'm new to SCSS. I have the following code:</p>
  
  <pre><code>.answers-post {
    float: left;
  
    .btn {
      background: white;
  
      &amp;:hover {
        background: dark-light-diff($primary, $secondary, 65%, -75%);
        color: $secondary;
      }
    }
  }
  </code></pre>
  
  <p>It sets the background of the button to be white. Some of the users which use our scripts, have a white background. So a small idea came to my head - Is it possible somehow to check the color of the background and if it a <strong>kind of</strong> white, than it will not set it white (will not set any color). By kind of, I mean that the hex value is between two points of white (not sure which).</p>
  
  <p>I'm sorry in advance if this questions sound odd, I'm not quite sure if its a reasonable idea in scss but from reading the docs, scss is a powerful tool that contains alot of interesting ideas. </p>