188 Tiny Blue
An unusual color name for sure, but it certainly helped in identifying what it was used for! Now we're getting to the really odd colors... Scala was pretty bad, but Duplo and Clikits around 2002-2005 had several single-use colors, many of which were rather close to existing colors.
Only three parts exist in this color as far as I can tell, used only in the Duplo Little Robots theme in 2003 and 2004. (the third part is this one.)