The distinct coloration of Las Coloradas is attributable to high concentrations of salt, halophilic bacteria, and algae within the water. As water evaporates from the shallow lagoons, these organisms become more concentrated. Certain species, such as Dunaliella salina, possess carotenoid pigments that, when present in high concentrations, impart a pink to reddish hue to the water body. The pinkness intensifies under higher salinity and sunlight conditions.
This unusual phenomenon has made Las Coloradas a notable destination, attracting attention for its aesthetic qualities and unique ecosystem. The high salt concentration is also commercially significant, as the area is a major salt production site. Historically, the Mayan civilization utilized the area for salt extraction, and modern operations continue this practice, further influencing the water chemistry and contributing to the vibrant colors.