Albrecht Dürer watercolour pencil
light ultramarine
cobalt blue-greenish
middle phthalo blue
Pitt Artist Pen Fineliner S India ink pen
indanthrene blue
phthalo blue
Pitt Artist Pen Metallic 1.5 India ink pen
blue metallic
Grip Finepen
0.4, light blue
Prussian blue
Pitt Artist Pen Brush India ink pen
dark indigo
ice blue
cobalt blue
Colour Grip colour pencil
Pastel blue
Sky blue
Midnight blue
Polychromos colour pencil
144 cobalt blue-greenish
143 cobalt blue
Pitt Artist Pen Soft Brush India ink pen
light indigo