Polychromos pastel
dark indigo
Prussian blue
indanthrene blue
light ultramarine
Albrecht Dürer watercolour pencil
phthalo blue
ultramarine
blue violet
cobalt blue
skyblue
helioblue reddish
light phthalo blue
cobalt blue-greenish
middle phthalo blue
Pitt Artist Pen Calligraphy India ink pen
Jumbo Grip colour pencil
Blue metallic