A lighting control system includes a central control apparatus and plural luminaires. A light color of each of the plural luminaires can be changed and each of them is assigned to one of plural groups to which different light colors are assigned or is duplicately assigned to the plural groups. The central control apparatus includes a control part and an output part. The control part generates control signals for controlling the light colors of the plural luminaires and causes a light color of a luminaire overlapping with the plural groups or an adjacent luminaire to become an intermediate light color between the assigned light colors for the respective plural groups when the plural luminaires assigned to the plural groups are lit and controlled. The output part outputs the control signals generated by the control part to the plural luminaires.