A display device includes: a display panel including scan lines, data lines, and color pixels located at crossing regions of the scan lines and the data lines, each of the color pixels including a driving transistor, the color pixels including first color pixels, second color pixels, and third color pixels; a scan driver configured to transfer a scan signal; a data driver configured to transfer an image data signal; an initialization voltage controller configured to set different initialization voltages for each pixel during each frame according to a threshold voltage deviation for the driving transistor of each pixel and calculate the initialization voltages including first, second, and third initialization voltages corresponding to the plurality of color pixels; an initialization voltage driver configured to apply the calculated first, second, and third initialization voltages; and a signal controller configured to generate and transfer a control signal and the image data signals.