Electrophoretic fluid comprising at least one solvent, at least one dye, and a) white particles, and at least one set of coloured particles or b) at least two sets of coloured particles having different colours and optionally white particles, wherein the coloured particles in a) and b) are selected from red, green, blue, magenta, cyan, and yellow particles, and mixtures thereof, wherein the white particles and the coloured particles are oppositely charged or chargeable and when more than one set of coloured particles are used, they are oppositely charged or chargeable, and wherein the electrophoretic fluid comprises at least one dye according to Formula I, Formula II, Formula III, Formula IV, Formula V or Formula VI wherein X and X' are independently of one another H or an electron-withdrawing group; R 1 and R 2 are independently of one another linear or branched, substituted or unsubstituted alkyl groups where one or more non-adjacent carbon atoms may be replaced by O, S and/or N; R 3 and R 4 are independently of one another linear or branched, substituted or unsubstituted alkyl groups where one or more non-adjacent carbon atoms may be replaced by O, S and/or N; R5 is a methyl or methoxy group; and the dye comprises at least one electron-withdrawing group; wherein R 6 and R 7 are independently of one another linear or branched, substituted or unsubstituted alkyl groups where one or more non-adjacent carbon atoms may be replaced by O, S and/or N; wherein X" is an electron-withdrawing group; R 8 is a methyl or methoxy group; R 9 and R 10 are independently of one another linear or branched, substituted or unsubstituted alkyl groups where one or more non-adjacent carbon atoms may be replaced by O, S and/or N; wherein R 12 and R 13 are independently of one another linear or branched, substituted or unsubstituted alkyl groups where one or more non-adjacent carbon atoms may be replaced by O, S and/or N; R 11 is an alkyl or alkoxy group with at least 3 carbon atoms; wherein R 14 and R 15 are independently of one another linear or branched, substituted or unsubstituted C8-C20 alkyl groups where one or more non-adjacent carbon atoms may be replaced by O, S and/or N; wherein X''' is an electron-withdrawing group; R 16 and R 17 are independently of one another linear or branched, substituted or unsubstituted alkyl groups where one or more non-adjacent carbon atoms may be replaced by O, S and/or N; R 18 is NHCOR with R = linear or branched C1-C10 alkyl groups. X and X' are independently of one another H or an electron-withdrawing group; R 1 and R 2 are independently of one another linear or branched, substituted or unsubstituted alkyl groups where one or more non-adjacent carbon atoms may be replaced by O, S and/or N; R 3 and R 4 are independently of one another linear or branched, substituted or unsubstituted alkyl groups where one or more non-adjacent carbon atoms may be replaced by O, S and/or N; R5 is a methyl or methoxy group; and the dye comprises at least one electron-withdrawing group; R 6 and R 7 are independently of one another linear or branched, substituted or unsubstituted alkyl groups where one or more non-adjacent carbon atoms may be replaced by O, S and/or N; X" is an electron-withdrawing group; R 8 is a methyl or methoxy group; R 9 and R 10 are independently of one another linear or branched, substituted or unsubstituted alkyl groups where one or more non-adjacent carbon atoms may be replaced by O, S and/or N; R 12 and R 13 are independently of one another linear or branched, substituted or unsubstituted alkyl groups where one or more non-adjacent carbon atoms may be replaced by O, S and/or N; R 11 is an alkyl or alkoxy group with at least 3 carbon atoms; R 14 and R 15 are independently of one another linear or branched, substituted or unsubstituted C8-C20 alkyl groups where one or more non-adjacent carbon atoms may be replaced by O, S and/or N; X''' is an electron-withdrawing group; R 16 and R 17 are independently of one another linear or branched, substituted or unsubstituted alkyl groups where one or more non-adjacent carbon atoms may be replaced by O, S and/or N; R 18 is NHCOR with R = linear or branched C1-C10 alkyl groups.