The most frequent away colours used by Portsmouth have been white shirts with royal blue shorts and either royal blue or white socks. Other colours that have appeared several times on Pompey change kits have been yellow (usually with blue shorts) and red (often combined with black.) Pompey have also briefly experimented with salmon pink, black, orange, navy blue and, perhaps most notably, gold change strips.
Pompey's first ever kit had a shirt that was salmon pink in colour with white shorts and maroon socks. This kit lasted until 1909 when they changed to white shirts with royal blue shorts and socks. This kit lasted just two years before it was changed for blue shirts, white shorts and black socks. This was Pompey's home strip up until 1947 when the socks were changed to red; this conicided with the club's most succesful period and has remained the favoured colours for majority of the time since. Yellow and more recently gold have also been used as secondary colours on the club's home shirts.
Portsmouth F.C.'s club crest, like its nickname, is derived from that of the city. The official emblem contains a gold star and crescent on a blue shield. Portsmouth's adoption of the star and crescent (usually synonymous with Islam) is said to have came from when King Richard I, granted the city "a crescent of gold on a shade of azure, with a blazing star of eight points" which he had taken from the Emperor's standard of Governor Isaac Komnenos, after capturing Cyprus. It is one of the most recognisable football crests in English football and is nicknamed 'the smiley crest' because of its similarity to a smiling face.
Throughout its history Portsmouth have tried different variations of the crest before reverting back to the basic gold star and crescent. In the 1950s and 1960s the traditional crest was emblazoned on the shirt in white rather than gold but this was due to white being a cheaper alternative.
Between 1980 and 1989 the club scrapped the original crest and replaced it with a new design. This crest showed a football on top of an anchor (representing the navy) and a sword (representing the army). An interchangeable version included a circular version of the star and crescent crest in place of the football.
The Portsmouth F.C. badge from 1993-97.The return of the original crest in 1989 only lasted 4 years when it was replaced by the city's coat of arms in 1993. This design centred around the basic star and crescent but was unpopular with many fans who thought it was overelaborate. After only four seasons the original crest was again reinstated and remains to the present day. In time for the 2007 season "Since 1898" was added to the badge underneath the club's name.