A color reproduction apparatus having plural color reproduction ranges, the apparatus comprising: a selection unit which receives a target color gamut selected or defined by a user to reproduce an input color signal therein, the input color signal having an input signal color gamut; the target color gamut being different from the input signal color gamut; a calculation unit which calculates a mixture ratio enabling primary colors of the target color gamut to be created by mixing primary colors of a color gamut of the color reproduction apparatus to produce the input color signal therewith; a primary color determination unit which produces primary colors reconfigured by mixing the primary colors of the color gamut of the color reproduction apparatus according to the calculated mixture ratio; a driving unit which adjusts a light amount of illuminants of each channel corresponding to the primary colors of the color reproduction apparatus in order to match the input color signal to an output signal in the target color gamut determined by the reconfigured primary colors wherein, for each time period of a plurality of time periods of a frame, a different one of the plurality of primary color light sources is switched to an operation state by the switching unit to emit a respective original primary color light at a full amplitude for the corresponding time period, at least one of the other primary color light sources is switched to an operation state by the switching unit to emit at least another respective original primary color light at a partial amplitude for the corresponding time period so that at least two of the original primary color lights are mixed to produce one target primary color of a plurality of target primary colors; and a display unit which displays the output signal converted from the input signal and matched to the color gamut determined by the reconfigured primary colors. a selection unit which receives a target color gamut selected or defined by a user to reproduce an input color signal therein, the input color signal having an input signal color gamut; the target color gamut being different from the input signal color gamut; a calculation unit which calculates a mixture ratio enabling primary colors of the target color gamut to be created by mixing primary colors of a color gamut of the color reproduction apparatus to produce the input color signal therewith; a primary color determination unit which produces primary colors reconfigured by mixing the primary colors of the color gamut of the color reproduction apparatus according to the calculated mixture ratio; a driving unit which adjusts a light amount of illuminants of each channel corresponding to the primary colors of the color reproduction apparatus in order to match the input color signal to an output signal in the target color gamut determined by the reconfigured primary colors wherein, for each time period of a plurality of time periods of a frame, a different one of the plurality of primary color light sources is switched to an operation state by the switching unit to emit a respective original primary color light at a full amplitude for the corresponding time period, at least one of the other primary color light sources is switched to an operation state by the switching unit to emit at least another respective original primary color light at a partial amplitude for the corresponding time period so that at least two of the original primary color lights are mixed to produce one target primary color of a plurality of target primary colors; and a display unit which displays the output signal converted from the input signal and matched to the color gamut determined by the reconfigured primary colors.