The invention provides a photosensitive composition, a color filter obtained using the composition, a manufacturing methof thereof and a colored image forming method using the photosensitive composition. The photosensitive compositions comprise [A] a pigment having 0.01-0.10 [mu]m average particle diameter, [B] a binder resin, [C] an addition- polymerizable compound having at least one ethylenically unsaturated bond, [D] a photopolymerization initiator and [E] a solvent. When a film formed from each of the photosensitive compositions is immersed in >=10 times (by weight) as much said solvent as the film, dissolution time is within 5 min. |