The 71-year-old actress, who has appeared with the actor in the film "Absolutely Fabulous", says Elba does not match the description of the character as visualised by author Ian Fleming, reported FemaleFirst.
"Idris Elba is stunning - and was incidentally in 'Absolutely Fabulous' - but I don't think he is right for Bond, who is quite clearly described in the book," Lumley tells Radio Times magazine.
The "On Her Majesty's Secret Service" actress adds it has to do with racism and she is "colour-blind when it comes to acting, but Idris Elba is just a zonking great star anyway."