Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.3.0.rc.1)
// Compass (v0.13.alpha.10)
// ----

$color : red;
$secondaryColor: blue;
$tileWidth : 50px;
$tileHeight : 50px;

@mixin tile($height, $width) { 
  background : $color; 
  border-style:solid; 
  border-color:blue;
  height: $height;
  width: $width;
}
div { @include tile($tileHeight, $tileWidth)}

SassMeister-output.css

div {
  background: red;
  border-style: solid;
  border-color: blue;
  height: 50px;
  width: 50px;
}