What color marking is NOT typically used for runway indicators?

Runway indicators, which guide pilots during takeoff and landing operations, utilize specific colors to convey crucial information regarding the runway environment. Among the color markings used, white is typically employed for runway markings, red indicates a warning or stop, and yellow is utilized for taxiway markings or to denote certain safety areas.

Blue marking, however, is not generally used for runway indicators. Instead, blue lights are primarily associated with taxiways and are used to outline them, indicating safe paths for aircraft movement on the ground. This distinction helps pilots quickly differentiate between the various types of markings and lights they encounter, ensuring safer and more effective navigation around the airport and during flight operations.