These photos were taken with Kodak Portra 160NC film, ideally designed for portraits. Quite an unusual range of blues emerged, when combined with a circular polarising filter (CPL)
Kodak 160NC, Pentax P3 and a CPL
Picture the Light
Reflexio.com 
Love these blues. That first one is an abstract art piece. Quite amazing: the sharp colors, shapes and the textures – great contrast