Dye compositions, especially for dyeing hair, containing indane derivative compounds

The dye composition for fibers, especially keratin-containing fibers, contains at least one indane derivative compound of formula I, or a physiologically compatible, water-soluble salt thereof:wherein R1 is hydrogen, a halogen atom, a cyano group, a hydroxy group, a C1- to C4- alkoxy group, a C1- to C6- alkyl group, a nitro group, an amino group, an alkylamino group, a dialkylamino group, a -C(O)H group, a -COOR3 group, a -SO2R3 or a -C(O)CH3 group, wherein R3 is hydrogen, phenyl or a C1- to C6- alkyl group; and R2 is hydrogen, a C1- to C6- alkyl group or a phenyl group.