The application of dyes can have a significant effect on UV protection provided by a fabric, depending on the concentration of dyes in the fabric and the absorptivity of dyes in the UV region. Limited research has been done on UV protection of dyed textile materials by characterizing the absorbing properties of dyes in the UV region. This relationship of dye characteristics such as absorbance/transmittance in solution, color, and chemical structure on the UV transmittance and UPF of a lightweight, bleached cotton print cloth was investigated.