a4's previous logo was composed of 4 squares, and text over them.
even though we radically cleaned the design, an attempt was made to maintain a relation of the new logo to the old one, using 4 squares to draw the 4.
we also kept the institutional typography – futura – and proposed a design that pushed this fonts geometric perfection to the limit.
since the information is in white, the only possible color for the logo is black.