Colin Forbes, who has died aged 94, was the creator of elegant and sometimes humorous graphic design, and a co-founder in 1972 of Pentagram, one of the best known and most admired design groups in the world.
He was one of the practitioners who helped radicalise mid-century British graphic design, transforming it from a cottage industry populated mostly by freelancers wielding airbrushes and crayons, and putting it on equal footing with the best work from Europe and the US.
