The FFL makeover is the first redesign for the channel, which was launched in 1993 by a group of 11 European public service broadcasters as an alternative news source to US channel CNN.
EuroNews is funded with €50m a year by the broadcasters' group the European Broadcasting Union.
The channel is unique in that it does not have on-screen anchors, but presents news as simply pictures and text with narration in a range of languages including English, French and German.
Its new look -- with a white circle as its logo and 'pure' as its slogan -- plays on its aim to present news without bias.
The new look was first shown on air at 8pm last night. The old logo depicted a multi-coloured globe on a blue background.
At the same time, EuroNews' website was updated, with Nokia having booked all advertising space for three days.
EuroNews has taken out ads in several European newspapers to announce the change, including the Financial Times and the Guardian in the UK.
In the UK, the channel can be found on Sky channel 508 and Virgin Media channel 620.