KBC 2023| Generally, what colour is a ruby? KBC 2023, Check the answer to the question- Generally, what colour is a ruby? By Himani Budakoti - September 18, 2023 KBC 2023, Amitabh Bachchan. (Representative Image) KBC 2023, The options of the question – Generally, what colour is a ruby? A. Yellow B. Green C. Blue D. Red The answer is D. Red.