Midnight Blue is a dark blue-black closely related to Paynes Grey except that Paynes Grey is a blend of Ultramarine Blue with Mars Black while Midnight Blue is a mixture of Phthalo Blue. While both are equally lightfast and equally useful, they have quite distinctly different characters and moods about the colors that they are mixed with. Paynes Grey has a distinctive blue-violet cast to it which makes it ideal for working with the cool end of the spectrum, especially with blue grays and violets or mauves. Midnight Blue is possibly a little more flexible. It has a distinct greenish blue cast that makes it perfect for making deep intense greens but, paradoxically, it is when working with the red and violet end of the spectrum that it really shines.
Chemical Description: Blend Iron oxide black, Sodium aluminosulphosilicate & Copper phthalocyanine
Pigment Numbers: PB29 PB15.3 PBk11
Lightfastness Rating: ASTM I
Pigment Opacity: Semi-Transparent
Paint Opacity: Opaque