Structure, color filter, solid state imaging device, image display device, method for producing structure, and composition for forming organic substance layer

Provided are a structure having excellent moisture resistance, a color filter, a solid state imaging device, an image display device, and a method for producing the structure. Also provided is a composition for forming an organic substance layer, which is used to form the structure. This structure 100 includes: a support body 1; dividing walls 2 formed on the support body 1; colored layers 4 which are formed on the support body 1 in regions divided by the dividing walls 2; and, between the dividing walls 2 and the colored layers 4, an organic substance layer 3 formed using a composition that contains a compound having a group having an ethylenically unsaturated bond.