Use for oxidation dyeing of keratin fibers of a composition comprising, in a medium suitable for dyeing, at least one 3-amino pyrazolo- [1,5-a] -pyridine of formula (I) below by way of oxidation base and / or one of its addition salts with an acid or with a base: (See formula) in which: - R1, R2, R3, R4 and R5, identical or different, represent a hydrogen atom or of halogen; a radical -NHSO3H; a hydroxyl radical; a (C1-C4) alkyl radical; a (C1-C4) alkoxy radical; a (C1-C4) alkylthio radical; mono ((C1-C4) alkylamino; a di (C1-C4) alkylamino radical in which the two alkyl groups can together with the nitrogen atom to which they are attached, form a cycle that can be interrupted by one or more atoms of nitrogen, oxygen or sulfur; a heterocycle; a nitro radical; a phenyl radical; a carbonyl radical; a (C1-C4) alkoxy radical; a carboxamido radical; a cyano radical; an amino radical; a sulfonyl radical; unradical - CO2H, a radical -SO3H; a radical -PO3H2; a radical -PO4H2; or a group of the following formula (II): (See formula) in which R represents an oxygen or nitrogen atom, X represents an oxygen atom , an NH or NH (C1-C4) alkyl group, and Y represents a hydroxyl, amino, C1-C4 alkyl, (C1-C4) alkoxy, (C1-C4) alkylamino, or di (C1-C4) alkylamino radical .
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