An antireflection stack, whereby a reflected color is moderate, and a multicolorization is suppressed. The antireflection stack comprises a substrate and an antireflection layer stacked on the substrate. The antireflection layer has a four-layer structure and comprises, sequentially from the substrate side, a first layer, a second layer, a third layer and a fourth layer. Further, the first layer has a refractive index of from 1.7 to 1.79, the second layer has a refractive index of from 2.25 to 2.45, the third layer has a refractive index of from 2.1 to 2.3, the fourth layer has a refractive index of from 1.25 to 1.5, and the refractive index of the second layer is larger than that of the third layer.