Color measuring system, backing plate, and color measuring apparatus

A backing plate disposed under a color measurement target to be subjected to color measurement by a color measuring apparatus, the backing plate comprising:

• an alignment unit with which alignment between the backing plate and the color measuring apparatus is performed in a state where the backing plate is disposed under the color measurement target and entirely covered with the color measurement target;
• a light-emitting unit included in the alignment unit and configured to emit light toward the color measurement target;
• and
• a power-receiving coil configured to obtain power via a power-transmitting coil provided at the color measuring apparatus, wherein
• the light-emitting unit receives power from the power-receiving coil and emits light.