The Department of Mathematics and Statistics, St. Teresa’s College (Autonomous), Ernakulam organized a two-day webinar on the topic ‘Graph Colouring’ on 1st and 2nd July of 2021. The program was conducted as part of Prof. N . Dharmambal Memorial Lecture Series 2021-2022. It was conducted online through the platform Google Meet.The resource person for the program was Dr. Manju K Menon, Assistant Professor, and HOD of Department of Mathematics, St. Paul’s College, kalamassery, Ernakulam. On the first day, she gave an introduction to graph colouring by discussing topics like the origin of graph theory, different types of graphs, different types of colourings, its applications, four colour theorem, etc. On the second day she focused on some open problems in Graph colouring.