Patent ID: 8394490

Claim:
A structural color body having a first principal surface and a second principal surface opposed to each other, wherein the structural color body is film-like and comprises: a first resin layer disposed on a side of the first principal surface; a second resin layer disposed on a side of the second principal surface; and a third resin layer disposed between the first resin layer and the second resin layer, each of the first resin layer, the second resin layer and the third resin layer contains a block copolymer and has a micro-phase separated structure including lamellar micro domains, each of the micro domains has a wave-like shape having amplitudes in a thickness direction of the structural color body, in each of the micro domains of the first resin layer and the second resin layer, a maximum value of distances in the thickness direction between tops of convexities and bottoms of concavities of the micro domain is larger than a wavelength in a visible light range, and in each of the micro domains of the third resin layer, distances in the thickness direction between tops of convexities and bottoms of concavities of the micro domain are equal to or less than a wavelength in a visible light range.