Goldfaber Aqua watercolour pencil
ultramarine
light ultramarine
cobalt blue
Albrecht Dürer Watercolour Marker
helioblue reddish
light blue
Albrecht Dürer watercolour pencil
Prussian blue
indanthrene blue
phthalo blue
skyblue
dark indigo
light phthalo blue
cobalt blue-greenish
middle phthalo blue