What color are taxiway edge lights typically?

Taxiway edge lights are typically blue. These blue lights are used to delineate the edges of taxiways, providing pilots with an important visual cue during operations on the ground, especially at night or in low visibility conditions. Their distinct color helps to differentiate the taxiway from runways, which are marked by different colored lights. Blue is chosen for taxiway edge lights because it stands out clearly against the background of the airport environment, ensuring that pilots can easily identify the boundaries of taxiways as they navigate the airport.

While other colors have specific uses (like green for runway centerlines and yellow for taxiway centerline or holding position markings), blue is exclusively associated with defining taxiway edges. This standardization across airports around the world allows for greater safety and consistency in ground operations.