Yes, that’s a Red Clover. I feed our Sully this often.
Trifolium pratense, the red clover, is a herbaceous species of flowering plant in the bean family Fabaceae, native to Europe, Western Asia, and northwest Africa, but planted and naturalized in many other regions.
Although all Clovers contain high levels of protein, they are still acceptable to feed as a small percentage of the tortoise's diet.