An illumination control device for controlling output duty ratios of pulse signals (P1, P2, P3) output to a red light emitting element, a green light emitting element, and a blue light emitting element, the illumination control device being characterized by comprising: an acquisition unit configured to acquire effect information; a first storage unit configured to store a plurality of color tables showing reference duty ratios corresponding to brightness information and provided for each piece of color information; a second storage unit configured to store an effect table showing a waveform height of an effect waveform corresponding to unit time information; a first effect control unit configured to sequentially acquire brightness information corresponding to the waveform height for each piece of unit time information when effect information for changing brightness like the waveform shown in the effect table is acquired together with color information, sequentially acquire the reference duty ratios corresponding to the sequentially acquired brightness information from the color tables corresponding to the acquired color information, and output the pulse signals (P1, P2, P3) with the output duty ratios corresponding to the sequentially acquired reference duty ratios; and a second effect control unit configured to sequentially acquire color information corresponding to the waveform height for each piece of unit time information when the effect information for changing color like the waveform shown in the effect table is acquired together with brightness information, sequentially acquire the reference duty ratios corresponding to the acquired brightness information from the color tables provided for the sequentially acquired color information, and output the pulse signals (P1, P2, P3) with the output duty ratios corresponding to the sequentially acquired reference duty ratios. an acquisition unit configured to acquire effect information; a first storage unit configured to store a plurality of color tables showing reference duty ratios corresponding to brightness information and provided for each piece of color information; a second storage unit configured to store an effect table showing a waveform height of an effect waveform corresponding to unit time information; a first effect control unit configured to sequentially acquire brightness information corresponding to the waveform height for each piece of unit time information when effect information for changing brightness like the waveform shown in the effect table is acquired together with color information, sequentially acquire the reference duty ratios corresponding to the sequentially acquired brightness information from the color tables corresponding to the acquired color information, and output the pulse signals (P1, P2, P3) with the output duty ratios corresponding to the sequentially acquired reference duty ratios; and a second effect control unit configured to sequentially acquire color information corresponding to the waveform height for each piece of unit time information when the effect information for changing color like the waveform shown in the effect table is acquired together with brightness information, sequentially acquire the reference duty ratios corresponding to the acquired brightness information from the color tables provided for the sequentially acquired color information, and output the pulse signals (P1, P2, P3) with the output duty ratios corresponding to the sequentially acquired reference duty ratios.