<div class="module">
  <h2 class="stripe-7">Radial</h2>
  <p>You could do some schenigans where you have a big rotated element within this header area (with hidden overflow) that has these stripes. That way you could get away with not using repeating-linear-gradient.</p>
</div>

.module {
  background: white;
  border: 1px solid #ccc;
  margin: 3%;
  > h2 {
    padding: 1rem;
    margin: 0 0 0.5rem 0;
  }
  > p {
    padding: 0 1rem;
  }
}

.stripe-7 {
  color: white;
  background: repeating-radial-gradient(
    circle,
    purple,
    purple 10px,
    #4b026f 10px, 
    #4b026f 20px
  );
}