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New dyesaliphatic esters of 1,6,7,12-tetrachloroperylene-3,4,9,10-tetracarboxylic acidwere prepared as potential fluorescent light-stable colorants for high-visibility safety wear. The structure of the 15 perylenes was confirmed by 1 H and 13 C nuclear magnetic resonance spectroscopy and mass spectrometry, and their spectroscopic and physicochemical properties were determined. An attempt was made to apply the synthesised products as disperse dyes in the coloration of polyester as well as in the mass coloration of polystyrene and poly(methyl methacrylate). The light, wash, and rubbing fastness of the dyeings were determined, and chromaticity coordinates of selected samples were measured and discussed.