In implementations of dynamic texture for a digital paintbrush one or more computing devices implement a digital paintbrush module to receive a stroke property of a stroke from an input device. The digital paintbrush module determines a weight to apply to a texture image channel that represents an attribute of the digital paintbrush. A magnitude of the weight defines a significance of the attribute relative to another attribute of the digital paintbrush which is represented by another texture image channel. A texture stamp of the digital paintbrush is generated by combining the texture image channel with the other texture image channel. The texture stamp is used to render the stroke of the paintbrush in a user interface of a display device based on the received stroke property.