He also posted a photo of the two of them with other team mates alongside the words: 'Brothers in arms.'
One of many of Clarke's tweets said 'Happy birthday 408. Life will never be the same' - referring to Hughes being the 408th Australian to play test cricket.
Many of the extended cricket family posted their own heartfelt words on social media throughout the day including former Australian cricketers Darren Lehmann and Craig McDermott - who commented on Hughes' 'cheeky smile'.
Team mate Nathan Lyon tweeted saying how much the team missed the much-loved cricketer.
Good mate and Rabbitohs player Greg Inglis, who is another to hail from Macksville in northern NSW, posted a heartbreaking birthday message to Hughes saying: 'Makes it even harder today. Happy birthday champion.'
Clarke made reference to Hughes' cheeky smile in two posts saying: 'You are all teeeth bro' and another simply saying: 'What a smile.'
He also showed his deep admiration for Hughes saying: 'This boy could do everything!'
On the eve of Hughes' birthday, a night vigil was held in his hometown of Macksville in NSW.
The locals came together for a minute's silence for Hughes at 8.15pm on Saturday followed by a lone bagpiper playing Amazing Grace.
Hughes' life support was turned off on Thursday, two days after he was struck in the head with a ball during a match at the Sydney Cricket Ground on Tuesday.
