Accordingly, the present invention in one aspect is a fluorescent red composition comprising a red perylene dicarboximide dye having the formula wherein R1 and R2 are identical or different C1-C18 alkyl which are unsubstituted or substituted by C1-C18 alkoxy, C1-C18 alkanoyloxy, C1-C18 alkylthio, hydroxyl, phenyl, phenoxy or phenylthio; cyclohexyl which is unsubstituted or substituted by hydroxyl,