The Dalmatian wall lizard (Podarcis melisellensis) and the Italian wall lizard (Podarcis siculus) are two sympatric species from the Lacertidae family. In Croatia they are widespread on the Adriatic coast and islands. They are in a competitive relationship when found in the same habitat. Sexual dimorphism in appearance and coloration is noticeable in the populations of both species. This study aimed to determine characteristic coloration for each species as well as for each sex within the species. The research was conducted on a total of 60 individuals, 15 males and 15 females of each species caught in three mainland locations - Knin, Pag and Sinj. Spectrophotometric analysis was used to determine the colors on the lizard's body. We analyzed difference in dorsal and lateral colors related to crypticity – green and brown color on the back and brown color on the side of the body and the difference in lateral and ventral colors related to intraspecies communication – blue color of outer ventral scales and neck and chest color. According to the results, it can be concluded that there is a similarity between the species, it exists in colors related to crypticness – brown colors of the dorsal and lateral sides of the body. Difference between the species exists in the colors related to intraspecies communication, the Dalmatian wall lizard shows greater proportion of yellow and green color on the neck compared to members of the Italian wall lizard. Sexual dimorphism within the species is expressed in the Dalmatian wall lizard where males have a greener back and females a yellower chest. Males of both species show a bluer coloration of outer ventral scales compared to females