Polychromos colour pencil
246 Prussian blue
Colour Grip colour pencil
Ocean blue
Sky blue
Metallics marker
colour ice ice blue
Jumbo Grip colour pencil
Pitt Artist Pen Metallic 1.5 India ink pen
blue metallic
Pitt Artist Pen Brush India ink pen
ultramarine
dark indigo
indanthrene blue
ice blue
cobalt blue