Appearance of products are of great importance in textile industry owing to its influential impact on costumer buying behavior. Color fastness and its measuring system play a key role in the assessment of textile quality and color. There are many different methods which have been presented in order to evaluate and measure the color fastness for flat textile with various textures. Some of these methods are visual assessment; using conventional instruments, such as colorimeters and spectrophotometers; and the application of digital devices, i.e. digital cameras and scanners. Contrary to the flat textiles for which only the longitudinal yarn is viewed and measured, in pile samples the cross-sectional view is mostly seen. The color which might have been observed from longitudinal yarn view may not be the same as the cross-sectional ones due to their different optical behaviors.Despite of the fact that numerous investigations have already been conducted to assess the surface properties and reflectance behaviors of these two views of the yarn, recent studies demonstrates that no research has been conducted about the relationship between the color fastness of the longitudinal and cross-sectional views of yarns or fibers. In this research, the color fastness of pile samples was assessed visually and spectrophotometricaly and the relationship between the color fastness of the pile samples and their corresponding longitudinal color fastness of the samples was investigated. For this purpose, the simulated pile and longitudinal were prepared in blue, red, yellow and black hues. Then the color fastness of the panels were investigated.The results of the visual assessment of the color fastness of longitudinal and cross-sectional views of the yarn showed that for the blue, red and yellow samples there is no industrially significant difference between the results of the two views of the yarn. For the black samples, although the differences between the results of the two views of the yarn are not industrially significant, the extent of the differences demands further future investigation. Also the results showed that the assessment obtained by the GRC color fastness formula gives better correlation to the visual data than the corresponding ISO formula results. It was also showed that the method suggested by Bernard is not appropriate for the assessment of the color fastness of cross-sectional view from the corresponding longitudinal view of the yarn. Keywords : Pile textiles, longitudinal, Cross-Section, Color fastness, visual assessment.