The phrase "a host of vibrant" is correct and usable in written English.
It can be used to describe a large number of lively or colorful things, often in a positive context.
Example: "The garden was filled with a host of vibrant flowers, creating a stunning display of colors."
Alternatives: "a multitude of lively" or "an array of colorful".
It is so popular that a host of products have illegitimately borrowed its vibrant logo.
The unmarried eccentric kept rents low and, with some clever social engineering, ensured that it retained a vibrant community supporting a host of amenities, including a primary school and football, cricket and bowling teams.
Over the past few years, Valletta has slowly transformed into a vibrant city, with a host of boutique hotels and charming restaurants and lively music scene.
Simpson and his deputy, Evelyne Malfliet, step out to face a host of women and children wearing headscarves and vibrant dresses.
Indeed, for more than a half-century, Mr. Gurlitt's only true companions were a vast menagerie of vibrant, multicolored images created by Picasso, Chagall, Gauguin and a host of other modern masters.
On the other hand, if we get real about fighting climate change, we can reap a host of added benefits, from healthier air and water to a more vibrant economy.
Not only does it have a raft of vibrant cities packed with world-class museums and galleries but a host of small medieval towns and villages with cobbled central squares decked with flowers and narrow streets to explore.
Although this tiny island state now has a host of expensive gourmet venues linked to some of the world's most famous chefs, at its core is a vibrant culture of street food at very affordable prices.
However, Oman's vibrant tourism industry has the potential to become the sultanate's lifeline as the oil crisis poses a host of new challenges.
