Polychromos colour pencil
light ultramarine
light phthalo blue
middle phthalo blue
Jumbo Grip colour pencil
indanthrene blue
helioblue reddish
Goldfaber Aqua watercolour pencil
ultramarine
cobalt blue
light blue
Pitt Artist Pen Brush India ink pen
light indigo
Colour Grip colour pencil
Blue metallic
Blue neon
Albrecht Dürer watercolour pencil
phthalo blue
blue violet
skyblue
cobalt blue-greenish
Pitt Pastel pencil
dark indigo
Pitt Artist Pen Fineliner S India ink pen
Prussian blue
Goldfaber colour pencil