Chelsea had to fight back from a two nil deficit to earn a draw and deny Newcastle a first win of the season.
Ayoze Perez made the most of a lapse by Kurt Zouma to fire the Magpies in front and Georginio Wijnaldum extended their lead with a stooping header.
But Ramires reduced the deficit with a fierce 25-yard strike and Willian equalised when his free-kick from the left sailed straight in.
Ramires went close to winning it for Chelsea but saw his late header saved.
Chelsea remain in the bottom half of the table and are eight points behind new leaders Manchester United.
Newcastle stay second-bottom, a point ahead of north-east neighbours Sunderland.