Cliftonville's hopes of retaining the Premiership title continue to fade after a scrappy Showgrounds stalemate.
Martin Donnelly and Jay Donnelly went close for the visitors in the first half while Darren McCauley's shot was deflected just over the Reds crossbar.
The hosts created the better second-half chances with Neil McCafferty blasting over and Peter Cherrie made a superb save to deny Ian Parkhill.
Cliftonville now trail leaders Crusaders by 13 points.
A gusting wind and bumpy pitch made playing conditions difficult while the champions were without strike duo Joe Gormley and David McDaid, who were both suspended.
Martin Donnelly curled his free-kick just wide while Jay Donnelly sent his shot from a tight angle narrowly past a post.
A slight touch took McCauley's close-range effort over the bar before Michael Doherty kept out Martin Donnelly's strike.
McCafferty squandered a good opening on the restart, blazing over from 12 yards after good work from McCauley.
Cherrie came to Cliftonville's rescue 10 minutes from time, keeping out Parkhill's header from a pinpoint Shane McGinty cross.
The result confirms Coleraine's place in the bottom six for the end-of-season league split.