According to Scientific American, the purple hue isn’t exactly intentional ... blue wavelengths and ultimately produces a bright white light. The thickness of that layer determines the warmth ...

"We are not going to a purple-hued street lighting plan. ... I didn't imagine that anybody was going to become that attached to them." The department added that bright white lights are necessary ...

Traditionally, paved roads and pedestrian walkways have been illuminated by streetlights emitting a bright white, orange, or yellow glow. The aim is visibility, not aesthetics, and rarely will ...