MOSCOW, March 26 (Reuters) - The Russian rouble slightly weakened against the U.S. dollar on Tuesday.

By 0715 GMT, the rouble was 0.23% lower at 92.80 to the dollar after trading in a range of 92.490 to 92.878.

Against the euro, the rouble fell 0.26% to 100.69 and dropped 0.19% to 12.80 against the yuan .

The most active Brent crude oil futures, a global benchmark for Russia's main export, fell 0.1% to $85.99 a barrel.

Russian stock indexes rose. The dollar-denominated RTS index rose 0.04% to 1,116.07. The rouble-based MOEX Russian index gained 0.15% to 3,286.54.

(Reporting by Reuters)