This color is likely referred to as either Alizarin Crimson Hue or Madder Deep, and in German it is Krappdunkel. This color is not to be confused with paints from the Mussini line (the pigments differ from Mussini Transparent Madder Root Tone, which is PR206, and Mussini Transparent Madder Lake Dark, which is PV42 and PR254. Norma Madder Deep, as PR179, is a useful pigment. Note from brand in German: Lasierendes tiefes braunstichiges Rot.