This Question cannot be answered with a simple focal length.
Fist of all: the visual field is an individual characteristic which varies from human to human. The outer visual field goes to ~95° whereas the inner visual field is limited by the nose to ~55°. The lower visual field is also larger than the upper: 70° vs. 60°. Sharp vision, however, is limited to a very small angle: less than 8°
The corena of the eye has ~43 dioptry, the lens 19-33 dioptry, depending on where you focus. The optical system results in 65 dioptry for a normal sighted and infinity. This equals a focal length of ~15mm. The size of the yellow spot (~2mm) can be viewed as the “film format size” of the human eye. This calculates to 7-8° angle of view, corresponding to a focal length of more than 300mm for 35mm-film(!)
Human vision, however, is not determined by the characteristics of the eye alone. The brain does a lot of “image processing” to enhance the poor performance of the human eye - compared to a photographic lens. A scene is usually “scanned” by the eyes and “stiched” in the brain.
Apart from that: a rule like “35mm focal length for 35mm film gives a perspective closest to the human vision” can only be valid (if at all) for a certain print size and a certain viewing distance.