series.labels.background String|Function

The background color of the labels. Accepts a valid CSS color string, including hex and rgb.

Example - set the chart series label background

<div id="chart"></div>
<script>
$("#chart").kendoChart({
  series: [ {
    labels: {
      visible: true,
      background: "green"
    },
    data: [1, 2]
  }]
});
</script>