1 cyanine blue | Definition of cyanine blue

cyanine blue

noun

Definition of cyanine blue

1a : a strong blue that is greener and deeper than Sèvres and redder and darker than cerulean blue (see cerulean blue sense 1b)

called also Leitch's blue

b : a deep purplish blue that is less strong and very slightly redder than sapphire (see sapphire sense 2a) and bluer and duller than hyacinth blue or Mazarine blue
2 or less commonly cyanine : a blue pigment consisting of a mixture of cobalt blue and Prussian blue

called also Leitch's blue