Abstract: The present disclosure relates to biocompatible injectable compositions. The provided compositions comprise or consist of silk fibroin, hyaluronic acid, horseradish peroxidase, hydrogen peroxide, and water. The injectable composition is tunable and may be adapted to have a gelation time from 3 minutes to 20 minutes, a storage modulus of 6 Pa to 4000 Pa, be injectable through a needle having a size from 32 G to 18 G, have optical transmittance from 75% to 95% for at least one wavelength from 400 nm to 700 nm, have a volume expansion from 5% to 400% relative to an original volume of the hydrogel after soaking in an aqueous solution for 12 hours, and/or have a hydrogel stability by maintaining at least 75% of the storage modulus and the optical transmittance of the hydrogel after 6 months in vivo. The present disclosure provides methods for making and using the same.