The present invention relates to a composition for dyeing keratin fibres, comprising: - one or more fatty substances, - one or more surfactants - one or more oxidation bases, - one or more phenol-derived couplers corresponding to the formula (B2) below: * R1, R3, R5, represent a hydrogen an optionally substituted C1-C8 alkyl or alkenyl radical -SR or -OR a saturated C5-C7 cyclic group a (C1-C4)alkylcarbonyl group hydrocarbonyl a sulphonic or carboxylic acid group * at least one of the radicals R1, R3, R5 representing a hydrogen atom * R2, R4 represent a hydrogen an optionally substituted C1-C8 alkyl or alkenyl -SR a (C1-C4)alkylcarbonyl hydrocarbonyl a sulphonic or carboxylic acid group * two groups chosen from R1, R2, R3, R4, R5 and borne by adjacent carbon atoms may form, together with said carbon atoms, a ring or a heterocycle with a single heteroatom, this ring or heterocycle comprising no double bond other than that of the ring to which it is fused * at least one of the radicals R1, R2, R3, R4, R5 being other than hydrogen - one or more alkalinizing agents the fatty substance content representing in total at least 25% by weight relative to the total weight of the composition. The present invention also relates to a process using this composition in the presence of at least one chemical oxidizing agent, and to multicompartment devices suitable for the implementation of the invention.La présente invention concerne une composition pour la coloration de fibres kératiniques, qui comprend : - une ou plusieurs substances grasses, - un ou plusieurs surfactants - une ou plusieurs bases doxydation, - un ou plusieurs coupleurs dérivés du phénol correspondant à la formule (B2) ci-dessous : * R1, R3, R5 représentent un atome dhydrogène un radical alcényle ou alkyle en C1-C8 facultativement substitué -SR ou -OR un groupe cyclique saturé en C5-C7 un groupe (alkyl en C1-C4)carbonyle un groupe hydrocarbonyle un groupe acide sulfonique ou carboxylique * au moins un des radicaux
