1. A single-panel type color imaging device configured by arranging color filters of a certain color filter array on a plurality of pixels that are constituted by photoelectric conversion elements that are arranged in a horizontal direction and a vertical direction, wherein the color filter array includes a basic array pattern of N×N (N: odd number which is equal to five or more) in which first filters that correspond to a first color that contributes most to obtaining a brightness signal and second filters that correspond to two or more second colors other than the first color are arranged, and the basic array pattern is arranged in the horizontal direction and the vertical direction repeatedly, the first filters are arranged on at least the two diagonal lines of the basic array pattern, a ratio of a number of pixels of the first color that correspond to the first filters is greater than a ratio of a number of pixels of the each of the second colors that corresponds to the second filters, and one or more of the second filters that respectively correspond to each of the second colors are arranged in each line of the horizontal direction and the vertical direction of the color filter array in the basic array pattern.