Nosy Be
A variant of Panther chameleon (Furcifer pardalis)

Representative Panther chameleonphoto — a dedicated image of this exact morph isn't available yet.
Island locale prized for solid turquoise-to-emerald blue males with little red; from Nosy Be island off NW Madagascar.
Keeper tips for this variant
The blue is best displayed when calm and well-hydrated — provide heavy live planting and a long misting/dripper cycle, as dehydration mutes the blue to grey.