Pitt Artist Pen Metallic 1.5 India ink pen
blue metallic
Polychromos colour pencil
120 ultramarine
144 cobalt blue-greenish
146 skyblue
151 helioblue reddish
143 cobalt blue
157 dark indigo
110 phthalo blue
140 light ultramarine
145 light phthalo blue
152 middle phthalo blue
247 indanthrene blue
246 Prussian blue
Albrecht Dürer watercolour pencil
dark indigo
137 blue violet
Pitt Pastel pencil
light ultramarine
cobalt blue
helioblue reddish
Polychromos pastel
phthalo blue
ultramarine
blue violet
light phthalo blue