The new Rs 50 notes to be issued by RBI are being made under the Mahatma Gandhi series.

The Reserve Bank of India (RBI) will now issue new bank notes of Rs 50 denomination.  The new notes are being made under the Mahatma Gandhi series.
They will also have the motif of 'Hampi with Chariot'.
The new fluorescent notes will be printed in blue and will bear the signature of RBI governor Urjit Patel. The announcement was made in a notification released by the RBI.
The new Rs 50 notes have several geometric patterns that align with the colour scheme on both obverse and reverse sides.
Although the new notes have been announced, the RBI said that the old Rs 50 notes will continue to be legal tender.
This is the third denomination that has been revamped since the government's demonetisation on November 8 last year. Earlier, new notes of Rs 2,000 and Rs 500 notes were introduced.