RANGERS have delivered a triumphant 'Glasgow is blue' message on the back of their Old Firm victory. 

Steven Gerrard's side were 2-0 winners over Celtic on Sunday as they booked their place in the Scottish Cup quarter-finals. 

It was a third Old Firm triumph of the campaign for the champions and Gerrard's side are now unbeaten in their last five derby fixtures.

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A Steven Davis strike and own goal from Jonjoe Kenny kept alive their ambitions of a league and Cup double this term and the champions will now face St Johnstone next weekend.

A video on Rangers' Twitter feed has now proclaimed that 'Glasgow is blue' as the message and club crest have been beamed onto Ibrox and landmarks across the city.

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The video contains slogans of 'this is our city', 'this one's for our fans' and 'we are champions' after a historic campaign that saw Rangers clinch their 55th league flag.