A Blue. I wish I could write a review that short, lol.
Pretty standard color as other brands, S.T. DuPont might OEM this ink to some other ink manufactures (I guess might be Pelikan or Diamine) and then pour it into their own bottle. Slightly shorter drying time comparing to Diamine blue. Good saturation with little shading. No water resistant as usual and wet flow. Although it didn’t feather or bleed through iPaper UCCU, it did on DoubleA.
CP value: 70/100, buying for the brand, not the ink. Rather go with KWZ.