To provide a composition for wet indicator which is excellent in discoloration performance and is suppressed in odor. What is disclosed is a composition for wet indicator comprising: a hydrocarbon oil (A), at least one selected from saturated fatty acids having 16 or more carbon atoms and derivatives thereof (B), and a wet-sensitive colorant composition (C), wherein the component (B) is contained in an amount of 2 to 85 parts by mass based on 100 parts by mass of the total amount of the components (A) to (C).