A two-dimensional color measurement device comprising: an imaging unit that includes a two-dimensional imaging element and configured to take a color image of a light-emitting region that is two-dimensional and is a measurement target; an optical sensor unit configured to receive light from a predetermined measurement point included in the light-emitting region and output a signal indicating a color of the predetermined measurement point; a first calculation unit configured to use a signal indicating the color image of the light-emitting region to calculate tristimulus values of each of a plurality of measurement points included in the light-emitting region, the signal indicating the color image of the light-emitting region being output from the imaging unit; a second calculation unit configured to use the signal indicating the color of the predetermined measurement point to calculate tristimulus values of the predetermined measurement point, the signal indicating the color of the predetermined measurement point being output from the optical sensor unit; a determination unit configured to make a distinction between a bright state of the light-emitting region and a dark state of the light-emitting region by using, as a yardstick, a case in which an index value indicating a brightness of the light-emitting region equals a predetermined value, and uses the index value to determine whether the light-emitting region is in the bright state or the dark state; a storage unit configured to store in advance a predetermined correction coefficient; and a correction unit configured to execute a first correction when the determination unit determines that the light-emitting region is in the bright state and execute a second correction when the determination unit determines that the light-emitting region is in the dark state, the first correction being a correction in which the tristimulus values of each of the plurality of measurement points, which have been calculated by the first calculation unit, are corrected by using the tristimulus values of the predetermined measurement point, which have been calculated by the second calculation unit, the second correction being a correction in which the tristimulus values of each of the plurality of measurement points, which have been calculated by the first calculation unit, are corrected by using the correction coefficient stored in the storage unit. an imaging unit that includes a two-dimensional imaging element and configured to take a color image of a light-emitting region that is two-dimensional and is a measurement target; an optical sensor unit configured to receive light from a predetermined measurement point included in the light-emitting region and output a signal indicating a color of the predetermined measurement point; a first calculation unit configured to use a signal indicating the color image of the light-emitting region to calculate tristimulus values of each of a plurality of measurement points included in the light-emitting region, the signal indicating the color image of the light-emitting region being output from the imaging unit; a second calculation unit configured to use the signal indicating the color of the predetermined measurement point to calculate tristimulus values of the predetermined measurement point, the signal indicating the color of the predetermined measurement point being output from the optical sensor unit; a determination unit configured to make a distinction between a bright state of the light-emitting region and a dark state of the light-emitting region by using, as a yardstick, a case in which an index value indicating a brightness of the light-emitting region equals a predetermined value, and uses the index value to determine whether the light-emitting region is in the bright state or the dark state; a storage unit configured to store in advance a predetermined correction coefficient; and a correction unit configured to execute a first correction when the determination unit determines that the light-emitting region is in the bright state and execute a second correction when the determination unit determines that the light-emitting region is in the dark state, the first correction being a correction in which the tristimulus values of each of the plurality of measurement points, which have been calculated by the first calculation unit, are corrected by using the tristimulus values of the predetermined measurement point, which have been calculated by the second calculation unit, the second correction being a correction in which the tristimulus values of each of the plurality of measurement points, which have been calculated by the first calculation unit, are corrected by using the correction coefficient stored in the storage unit.