The 'Drunk In Love' singer, 32, shared a photo with fans yesterday showing Jay, 44, carrying their daughter Blue Ivy along an idyllic beach.
Her caption read: "My favourite hue is Jay Z Blue."
Bey's snap came amid reports from the US alleging they are planning to separate once their joint 'On The Run Tour' comes to an end later this year.
Neither has commented.
Beyonce and Jay have been one of showbiz's most powerful couples since they married at a private ceremony in New York in September 2008.
Their daughter Blue Ivy was born in January 2012.
Earlier this year, they hit the headlines after leaked CCTV footage showed Jay apparently embroiled in a confrontation with Beyonce's younger sister Solange.
The grainy footage with no audio was captured in a New York elevator after the glitzy Met Ball 2014. Various reasons for the argument have been touted but none of the parties involved have ever confirmed what really happened.
A statement released on their behalf at the time read: "As a result of the public release of the elevator security footage from Monday, May 5th, there has been a great deal of speculation about what triggered the unfortunate incident. But the most important thing is that our family has worked through it.
"Jay and Solange each assume their share of responsibility for what has occurred. They both acknowledge their role in this private matter that has played out in the public. They both have apologised to each other and we have moved forward as a united family."
"The reports of Solange being intoxicated or displaying erratic behaviour throughout that evening are simply false. At the end of the day, families have problems and we're no different. We love each other and above all we are family. We've put this behind us and hope everyone else will do the same."
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