Introduction: Composite resins are substances that have in their organic matrix different components that can change their initial state after the expiration date established by the manufacturer. Objective: The objective of this in vitro study was to evaluate the possible color change of two composite resins used during and after the expiration date. Method: The composite resins LL1 color A1 and A2 inside and outside the shelf life for each resin (4 groups) were selected ten discs (n = 10), of 5mm x 2mm. The analyzes were performed in an environment with lighting and temperature controlled by a single examiner. For the spectrophotometric test, the Vita EasyShade® was used in which the values of the Vitta scale and the Cie system L*a*b* were obtained. Results: The values of ?E were obtained by comparing the specimens of expired and non-expired resins and showed that regardless of the color tested, the resins did not change color. Conclusion: Through spectrophotometry, the concluded results were that the resins did not correspond to the Vitta scale, however they did not differ between them when they were inside or outside the shelf life.