<canvas
   id="Canvasobject1"
   width="200"
   height="200"
   style="border: 2px solid #0000FF;">Ihr Browser unterstützt leider nicht das HTML5-Canvas-Element.
</canvas>

<script type="text/javascript">
   var c = document.getElementById("Canvasobject1");
   var cxt = c.getContext("2d");
   cxt.fillStyle ="#B4045F";
   cxt.fillRect(10,50,150,75);
</script>