Intense Blue (Phthalo Blue) is a deep intense blue which when undiluted, forms an inky blue-black. It is made from the modern pigment Phthalocyanine which was introduced in the 1930s.
- Colour Granulating Staining St
- Colour Number 327
- Colour Series 1
- Lightfastness (ASTM) II
- Permanence Rating A
- Transparency / Opacity T