Abstract: The present invention has its object to provide an optical layered body having sufficient hardness and an even surface, including a low refractive index layer having a sufficiently low refractive index, and having excellent antireflection properties. An optical layered body of the present invention comprises: at least a low refractive index layer on a light-transmitting substrate, wherein said low refractive index layer is formed by using a composition for a low refractive index layer, said composition comprising a hollow silica fine particle and an organic binder, said organic binder containing: a fluorine atom-free polyfunctional monomer having three or more reactive functional groups in one molecule; a fluorine atom-containing monomer; and a fluorine atom-containing polymer.