Background: The purpose of this study was to evaluate the color stability of different types of nano‑hybrid resin based composite restorative materials upon exposure to aggressive staining solutions (coffee and tea) over time. The color of all specimens before and after storage in the solutions were measured by a spectrophotometer based on CIE Lab system that is recommended by the American Dental Association and the color differences thereby is calculated. Materials and Methods: The color differences of three nano‑hybrid composites after immersion for 30 days in tea and coffee as aggressive beverage solutions. Results: Within the limitations of the study, Venus Diamond was found the most color stable in tea, while Ceram X was shown the most color stable in coffee. There were statistically significant differences between Filtek 350 XT in tea and coffee storage (P < 0.005), but there weren’t statistically significant in tea and coffee in both Ceram X, and in Venus Diamond (P > 0.005). Conclusion: Staining solutions are significant factors that affect color stability of composite resins. Key words: Color stability, nano‑hybrid resin based composite, storage media.