Plaid pattern using canvas

html #canvas
<style>
  body {
    display: flex;
    align-items: center;
    justify-content: center;

    background: repeating-linear-gradient(-45deg, transparent 0, transparent 25%, dodgerblue 0, dodgerblue 50%), repeating-linear-gradient(45deg, transparent 0, transparent 25%, tomato 0, tomato 50%), white;

    background-blend-mode: multiply;
    background-size: 80px 80px;
  }
</style>

<script>
  const canvasWidth = 1000,
    canvasHeight = canvasWidth;

  function setup() {
    createCanvas(canvasWidth, canvasHeight);
  }
</script>