Dim Light

This category includes moonlight, the light provided by a candle or another dim light source, indirect illumination (such as in the interior of a cave whose entrance is nearby or in a subterranean passageway that has narrow shafts extending to the surface), and the light cast by things such as phosphorescent fungi.

Published in Player's Handbook, page(s) 262, Rules Compendium, page(s) 166.