Aim and Objective: This study evaluates the in vitro effect of red wine on the color stability of three esthetic restorative materials: nanohybrid composites, conventional glass ionomer cement (GIC), and feldspathic porcelain. Materials and Methods: A total of 30 specimens (10 per material) were prepared and baseline color measurements were recorded using a spectrophotometer. Samples were divided into two subgroups (n=5) and immersed in red wine or distilled water for 20 minutes daily over 28 days. Post-immersion color changes were analyzed using two-way ANOVA and Tukey’s test. Results: Porcelain showed significantly higher color stability than composites and GIC. Conclusion: Porcelain exhibited the least discoloration, indicating better esthetic durability under staining conditions. © 2018 Elsevier B.V., All rights reserved.