A control system is configured to execute system control of controlling a system including a mobile robot that is configured to autonomously move and on which a user operation is executed. The system includes a light emission unit. The control system includes one or more processors. The one or more processors are configured to execute the system control. The system control includes light emission control of causing the light emission unit to emit light in different light emission patterns associated with each of a plurality of predetermined conditions. At least one of the plurality of predetermined conditions is a recommendation condition that is a predetermined condition for recommending a user operation on the mobile robot or a non-recommendation condition that is a predetermined condition for not recommending a user operation on the mobile robot.