The invention provides a novel compound, a novel polymer, a pigment including same, a positive-photosensitive resin composition including same, and a color filter. The novel compound is represented as the chemical formula (I). The novel polymer is prepared through copolymerization of the compound (I) with an alkene unsaturated monomer. The pigment includes the compound or an acrylate polymer. The color filter is made from the positive-photosensitive resin composition which includes the pigment and the photosensitive resin composition. The compound has great solubility in organic solvents; therefore, the photosensitive resin composition that includes the pigment with the compound as a component may be used for manufacturing the color filter which has great brightness and high contrast ratio.