Champagne-tone metal effect pigments

A metallic effect pigment based on coated aluminum substrate platelets, where the aluminum substrate platelets have a thickness of 5 to 35 nm, are of monolithic construction, and are surrounded by a native passivation layer of Al2O3 of less than 10 nm, where these aluminum substrate platelets are enveloped by at least one coating A of SiO2 having a layer thickness of 10 to 100 nm, bearing a further, applied coating B of Fe2O3 which envelops the substrate platelets having the SiO2 coating A and which has a layer thickness of 5 to 45 nm, and characterized, for a ΔE45 of ≤3 at not more than 7% pigmentation, more particularly ΔE45° of ≤1 at <7% pigmentation, by a saturation (Suv) in the range of 0.2-0.3, a value for the hue angle (huv) in the range of 50-65, a value for the flop/Alman Index above 26, and a value for the Gdiff (graininess) at not more than 6.