PROBLEM TO BE SOLVED: To provide an energy ray-curable three-dimensional modeling composition which has curability capable of being molded by three-dimensional modeling and is excellent in molding accuracy, color tone and color stability of a molded article when molded by three-dimensional modeling. An energy ray-curable three-dimensional structure composition containing a photopolymerization initiator (a), an energy ray absorber (b), and a polymerizable monomer (c). However, when λnm is any value in the range of 400 to 445 nm and the absorption coefficient at λnm is AS and the absorption coefficient at 450 nm is AN, AS/AN of the energy ray absorbent (b) is 10.0. That is all. [Selection diagram] None【課題】立体造形により造形可能な硬化性を有し、立体造形によって成形したときの造形精度、造形物の色調及び色調安定性に優れるエネルギー線硬化性立体造形用組成物の提供。【解決手段】光重合開始剤（ａ）、エネルギー線吸収剤（ｂ）、及び重合性単量体（ｃ）を含有する、エネルギー線硬化性立体造形用組成物。ただし、λｎｍが４００～４４５ｎｍの範囲のいずれかの値であり、当該λｎｍにおける吸光係数をＡS、４５０ｎｍにおける吸光係数をＡNとしたとき、エネルギー線吸収剤（ｂ）のＡS／ＡNが１０．０以上である。【選択図】なし
