Color imaging element

A single-plate color imaging element including color filters in a predetermined color filter array arranged on a plurality of pixels formed by photoelectric conversion elements arranged in horizontal and vertical directions, wherein

• the color filter array includes a predetermined basic array pattern including first filters corresponding to a first color that most contributes to obtaining luminance signals and second filters corresponding to two or more second colors other than the first color, the basic array pattern repeatedly arranged in the horizontal and vertical directions,
• one or more of the first filters and one or more of each of the second filters respectively corresponding to the two or more second colors are arranged in each line in the horizontal and vertical directions of the color filter array in the basic array pattern, and
• in the color filter array, the first filters are vertically and horizontally arranged across a filter at a center of a 3×3 pixel group in the 3×3 pixel group, wherein a second filter is arranged at the center of the 3×3 pixel group, the basic array pattern includes a plurality of 3×3 pixel groups and the first filters are arranged in a same pattern in each of the 3×3 pixel groups in the basic array pattern, and wherein the 3×3 pixel groups are arranged in the basic array pattern with no space between the 3×3 pixel groups.