3 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 PB15 Phthalo Blue + PB29 Ultramarine Blue.
A hue: a substitute for Cobalt Blue, made with other pigments.
Who makes it
PB15 Phthalo Blue + PB29 Ultramarine Blue2
- Holbein Artists' Oil Color No. H304PB15 PB29 PW6LF I Semi-opaqueSeries AHue20 ml tube · 40 ml tube · 50 ml tube* · 110 ml tube*About Holbein
PB29 Ultramarine Blue + PG7 Phthalo Green2
- Daler-Rowney Georgian (student)Student No. D111014111
- Lukas 1862 Artists' Oil Cobalt Blue (Hue) · No. 0126
Sizes are the ones each line is sold in; marks a size only some colors come in. Check the store for a particular color.