Short answer. Low tumble, then hang in airflow. High heat is faster and also how you buy a new set sooner.
The only routine that matters
Inside out, cold, darks with darks, low heat. That is the entire Yireh care philosophy. You bought the color on purpose — treat it that way in the laundry room.
Burgundy, teal, and royal blue especially do not belong in a hot load with towels.
