8 different recipes. Brands sell different pigment mixtures under this name, so they won't all look or mix alike. Compare the pigments below; the most common is PB66 Indigo.
Who makes it
PB66 Indigo2
- Grumbacher Pre-Tested Artists' Oil No. P112
- Schmincke Mussini Resin-Oil No. 10478
PB15 Phthalo Blue + PB29 Ultramarine Blue + PBk9 Ivory / Bone Black2
- Rembrandt Artists' Oil Colour No. 533PB15 PB29 PBk9LF I Semi-transparentSeries 2Hue15 ml tube · 40 ml tube · 60 ml tube* · 150 ml tube*About Rembrandt
- Blockx Extra-Fine Oil Colours No. 212255
PB27 Prussian Blue + PB29 Ultramarine Blue1
- Holbein Artists' Oil Color No. H314PB27 PB29LF I Semi-opaqueSeries BHue20 ml tube · 40 ml tube · 50 ml tube* · 110 ml tube*About Holbein
PB27 Prussian Blue + PBr7 Natural Iron Oxide1
- Williamsburg Handmade Oil Colors No. 6001043PBr7 PB27LF I Semi-opaqueSeries 3Hue37 ml tube · 150 ml tube · 8 fl oz can* · 16 fl oz can*About Williamsburg
PB27 Prussian Blue + PBk11 Mars Black1
- PB27 PBk11LF – Semi-transparentHue40 ml tube · 175 ml tube · 16 fl oz can* · 128 fl oz can*About Vasari
PB15 Phthalo Blue + PB29 Ultramarine Blue + PBk7 Carbon Black + PR176 Benzimidazolone Carmine1
- Lukas 1862 Artists' Oil No. 0122
Sizes are the ones each line is sold in; marks a size only some colors come in. Check the store for a particular color.