Introduction: Nano field composites have recently been developed to improve optical and physical properties of resins. Consumption of certain beverages may affect the esthetic and physical properties of the resin composite, thereby undermining the quality of restorations.The aim of the study is to assess the colour stability of a nano hybrid composite after immersion in different temperatures of tea and coffee. Materials and methods: In our study we used Ez Fill nanohybrid composite,coffee and tea solutions used as a staining agent in this study. We took 10 test samples which were prepared in the form of disks measuring 10 mm in diameter and 2 mm in thickness. Each disc was prepared using a Teflon mold of this size.The mold was filled with nanohybrid composite,light cured for 20 secs. Then all the specimens were polished and labeled, then the pre and post value of colour stability of specimens was measured using the VITA spectrophotometer after immersion in different temperatures of tea and coffee.Mean and standard deviation for ΔE value was calculated using a one way Anova test. Results: Pre-immersion and post-immersion values of each composite specimens were recorded and the change in the color (ΔE*ab) was calculated for each specimen.We compared the colour stability of each composite specimen after immersion in hot and cold coffee and tea solutions, and distilled water for 24 hrs. In group 1 the lowest ΔE mean value was recorded as 6.465, whereas in group 2, highest mean value 15.43 was recorded in cold coffee and tea solutions.The comparison of mean and standard deviation between two groups; p value (0.045) shows statistically significant. Conclusion: From the results obtained, we can conclude that nano hybrid composite showed significant discoloration when exposed to cold and hot temperatures.However, specimens kept at cold temperatures showed good colourstability,when compared to specimens stored at hot temperatures as it shows significant color changes.