191 Flame Yellowish Orange / Bright Light Orange
BrickLink: Bright Light Orange
This color was introduced in 2004 in Duplo, and is now a very common color, mostly thanks to Legends of Chima sets. This color shows a bit of variation, especially earlier parts. Technically, it replaced 105 Bright Yellowish Orange as part of the notorious color change around 2004.
Affectionately called Keetorange by Bionicle fans.