There are two ways to compose colour: the harmonic and the contrasting. The harmonic composition is the one that uses modulations of a same shade or of different shades and keep the same pigments among them. Harmony consists in the combination of three colours: the dominant, the tonic and the mediatic. The dominant is the one that has a greater percentage, the more neutral and the most prominent. The tonic is the most powerful as regards colour and the one with higher values. Finally, the mediatic acts as a transition between the other two. The latter is usually used to modify the sensation that colour produces directing it to one or other direction. The simplest one of the harmonic chromatic combinations is that one that fuses the shades of the same range. On the contrary, the contrasting chromatic combinations are those that gather colours of different range and that have nothing in common.