A wind turbine blade comprising: - at least one longitudinal hollow element that defines: - an external aerodynamic surface, and - an inner cavity having an inner surface in which there are a pressure zone and a suction zone, - at least one shear web, disposed in the inner cavity and bonded to the inner surface in at least two bonding surfaces disposed in bonding zones of the shear web, wherein the shear web comprises, in at least one bonding zone: - at least three fibre fabric layers, and - at least one central core and at least one lateral core disposed between the at least three fibre fabric layers; characterised in that: - the at least one lateral core comprises an adjacent side and at least one divergent side with respect to, at least, one lateral side of the at least one central core according to an angle of divergence, - the at least one central core comprises at least two fibre fabric layers disposed on at least part of one of the lateral sides, wherein one of the fibre fabric layers extends up to the bonding surface directly on said lateral side and another of the fibre fabric layers is disposed on the divergent side of the lateral core, such that the at least two fibre fabric layers are separated therebetween from the corresponding lateral side of the central core up to the at least one bonding surface, and - the lateral core also comprises a lateral surface parallel to the lateral side of the central core and adjacent to the divergent side. - at least one longitudinal hollow element that defines: - an external aerodynamic surface, and - an inner cavity having an inner surface in which there are a pressure zone and a suction zone, - an external aerodynamic surface, and - an inner cavity having an inner surface in which there are a pressure zone and a suction zone, - at least one shear web, disposed in the inner cavity and bonded to the inner surface in at least two bonding surfaces disposed in bonding zones of the shear web, wherein the shear web comprises, in at least one bonding zone: - at least three fibre fabric layers, and - at least one central core and at least one lateral core disposed between the at least three fibre fabric layers; - at least three fibre fabric layers, and - at least one central core and at least one lateral core disposed between the at least three fibre fabric layers; characterised in that: - the at least one lateral core comprises an adjacent side and at least one divergent side with respect to, at least, one lateral side of the at least one central core according to an angle of divergence, - the at least one central core comprises at least two fibre fabric layers disposed on at least part of one of the lateral sides, wherein one of the fibre fabric layers extends up to the bonding surface directly on said lateral side and another of the fibre fabric layers is disposed on the divergent side of the lateral core, such that the at least two fibre fabric layers are separated therebetween from the corresponding lateral side of the central core up to the at least one bonding surface, and - the lateral core also comprises a lateral surface parallel to the lateral side of the central core and adjacent to the divergent side. - the at least one lateral core comprises an adjacent side and at least one divergent side with respect to, at least, one lateral side of the at least one central core according to an angle of divergence, - the at least one central core comprises at least two fibre fabric layers disposed on at least part of one of the lateral sides, wherein one of the fibre fabric layers extends up to the bonding surface directly on said lateral side and another of the fibre fabric layers is disposed on the divergent side of the lateral core, such that the at least two fibre fabric layers are separated therebetween from the corresponding lateral side of the central core up to the at least one bonding surface, and - the lateral core also comprises a lateral surface parallel to the lateral side of the central core and adjacent to the divergent side.