Akinkunmi died in the early hours of Tuesday after a brief illness.
One of his children announced his death on Facebook.
He wrote: “Life is indeed transient; I can say boldly that you live a life with a landmark. Continue to rest, my father! Pa Michael Taiwo Akinkunmi (O.F.R.): Great Man has gone.”
The native of Abeokuta in Ogun State was born on May 10, 1936 but lived in Ibadan until his demise.
He attended Baptist Day Secondary School, Ibadan for his Primary education and Ibadan Grammar School, Ibadan for his Secondary education.
He started his career as a Civil Servant at the Secretariat of Ibadan and later travelled overseas to study Agricultural Engineering at Norway Technical College.
In 1958, during his stay abroad, Akinkunmi stumbled upon an advertisement in a national daily calling for the submission of designs for the Nigeria’s national flag in view of Nigeria’s imminent Independence from British governance.
His entry was adjudged the best among the roughly 2,000 entries submitted.
The original design of the flag featured a white band flanked by two green ones and a red sun with streaming rays was located on the white band.