In the present invention, a hair dye composition has a pH (25 DEG C) of 7.5 to 12 and comprises the following components (A), (B), and (C) : (A) one or more kinds of azo dyes selected from the group consisting of (A-1), (A-2), and (A-3)； (B) a cationic compound； and (C) 0.1 to 8 mass% of at least one alkali metal salt of an acid selected from the group consisting of hydrochloric acid, carbonic acid, and sulfuric acid.本發明之染毛劑組合物含有以下之成分(A)、(B)及(C)，且pH值(25℃)為7.5以上且12以下。(A)：選自由下述(A-1)、(A-2)及(A-3)所組成之群中之一種或兩種以上之偶氮染料(B)：陽離子性化合物(C)：選自由鹽酸、碳酸及硫酸所組成之群中之酸之鹼金屬鹽之至少一種0.1質量%以上且8質量%以下
