NUVrK diagram of the VIPERS galaxies classified into 11 sub-classes. The median colours of sub-classes are marked with points. The error bars correspond to the 25th and the 75th percentile range of the galaxy colour distribution. The size of ellipses correspond to the normalised median absolute deviation. Galaxies classified as red (C1–3) are separated from the blue galaxies (C7–11) by the solid black line as proposed by Davidzon et al. (2016). Green galaxies (C4–6) are located in between red and blue populations.