The markBeatriz & Rafael Bittencourt

ConstructionFour squares, two by two. Cobalt and green sit on one diagonal; the other two take the ground's opposite — white on a colour, yellow on white, as here. Gutter one quarter of a square.

The letterHanken Grotesk 700, set tight at minus three per cent, optically centred on the squares.

FloorsNever below eight millimetres. Six millimetres clear on every side.