Pitt Artist Pen Brush India ink pen
skyblue
Albrecht Dürer watercolour pencil
dark indigo
Pitt Artist Pen Fineliner S India ink pen
indanthrene blue
phthalo blue
Grip Finepen
0.4, helioblue reddish
0.4, light blue
Polychromos colour pencil
247 indanthrene blue
246 Prussian blue
Pitt Artist Pen Soft Brush India ink pen
120 ultramarine
144 cobalt blue-greenish
146 skyblue