The ubiquitous yellow CityCycle bikes peppered around Brisbane streets are about to turn blue, after Brisbane City Council and NRMA Insurance announced a new partnership.

In the council's budget, to be handed down next week, lord mayor Adrian Schrinner will also pledge a further $27 million to the city's bikeways.

Brisbane's CityCycle bikes will ditch the yellow and take on a new blue look.

Cr Schrinner said the new CityCycle partnership was expected to double the revenue from the council's bike sharing scheme over the coming year.

The scheme had struggled to balance the books in its first years of operation, but turned a corner last year with a 35 per cent increase in trips taken last year compared to the year before.