In this study, certain properties of Hibiscus sabdariffa flower extracts for the dyeing of cotton fabrics and wool yarns were investigated. For this purpose, the cotton fabrics and wool yarns were processed with pre–, meta– and post–mordanting methods in the presence of FeSO 4 , CuSO 4 and AlK(SO 4 ) 2 mordants. After dyeing, color analyses of the dyed samples were done and the results were evaluated in terms of wash, rubbing and light fastness values. The color codes were determined with Pantone Color Quide, and K/S and L * a * b * values were detected with color measurement spectrophotometer. The highest K/S value was measured as 9.55 for AlK(SO 4 ) 2 with post–mordanting method for dyed cotton fabrics. While generally blue, burgundy, green and lilac color tones were obtained in cotton fabrics, burgundy, red brown and green color tones were obtained in wool yarns. As a result, it was determined that cotton fabrics exhibited better dyeing potential compared to wool yarns, and the highest color strength values were obtained using the post–mordanting method. When the fastness tests for both cotton fabrics and wool yarns were compared, the order of AlK(SO 4 ) 2  > CuSO 4  > FeSO 4 in terms of fastness was obtained in all three mordanting methods.