Recordable optical recording medium having recording layer containing organic dye

A recordable optical recording medium, comprising

• a substrate on which at least a reflective layer, a recording layer and a light transmission layer are provided, characterized in that
• the recording layer is formed by adding a low hydrophilic and highly waterproof organic dye to a triazole-based azo metal complex dye represented by the following general formula (1):
• (in the general formula (1), a cyclic part is composed of a carbon atom, an oxygen atom and a hydrogen atom;
• R is a functional group selected from the group consisting of a hydrogen atom, an alkyl group having four or less carbon atoms, a benzyl group, a diethylamide group, a halogen group, a trifluoro methyl group, a methoxy group, a thiomethyl group and N,N-diethyl carbamoyl group;
• the alkyl group may have a straight chain alkyl, branched chain alkyl or cyclic structure;
• and M is a metal atom selected from the group consisting of nickel, cobalt and copper) and using the resultant organic dye, and
• wherein the low hydrophilic and highly waterproof organic dye added to the triazole-based azo metal complex dye represented by the general formula (1) has an optical density ratio of 60 wt % or more, the ratio being between the optical density being at a maximum absorption wavelength (λmax) before a dye thin film is immersed into hot water of 75° C. and the optical density being at the maximum absorption wavelength (λmax) after the dye thin film is immersed into the hot water for 30 minutes.