The invention discloses a colored-film substrate, a display panel and a display device. The colored-film substrate mainly comprises a substrate body; a plurality of color-resistance units are arranged like a rectangle on the substrate body; at least one color-resistance unit comprises a light sensitive organic film layer. The colored-film substrate has the advantages that the light sensitive organic film layer is used to perform blue resistance, so that the blue light transmission rate is improved, and meanwhile, different white points can be obtained through different transmission rate of the blue light.