seriesDefaults.labels.font String (default: "12px Arial,Helvetica,sans-serif")

The font style of the labels. Accepts a valid CSS color string, for example "20px 'Courier New'".

Example - set the chart series label font

<div id="chart"></div>
<script>
$("#chart").kendoChart({
  seriesDefaults: {
    labels: {
      visible: true,
      font: "20px sans-serif"
    }
  },
  series: [
    { data: [1, 2] }
  ]
});
</script>