A display apparatus includes a driver which receives an input image data (RGB), generates a compensation image data (RGBD) by compensating the input image data according to an equation 1, and generates a final image data by comparing the compensation image data to a maximum grayscale ⁢ RGB D = RGB * D , wherein ⁢ ⁢ ⁢ D = ( 100 decreasing ⁢ ⁢ ratio ⁢ ⁢ of ⁢ ⁢ luminance ) 1 α , ⁢ ⁢ wherein ⁢ ⁢ α ⁢ ⁢ is ⁢ ⁢ a ⁢ ⁢ gamma ⁢ ⁢ value , and ⁢ ⁢ decreasing ⁢ ⁢ ratio ⁢ ⁢ of ⁢ ⁢ luminance = real ⁢ ⁢ luminance target ⁢ ⁢ luminance * 100 ; 〈 equation ⁢ ⁢ 1 〉 and a display panel which includes a plurality of unit pixels and displays an image based on the final image data.