A display apparatus, an electronic device including the same, and an operating method thereof are disclosed. The display apparatus may include: a window layer configured to contribute to at least one outward appearance of the display apparatus; a pixel layer including at least one pixel configured to display graphic information received from a processor that is functionally connected to the display apparatus, a driving wiring that drives the pixel, and a Black Matrix (BM) disposed in a BM area that does not include the at least one pixel; and a color layer disposed in at least one direction of the pixel layer, and configured to allow a designated color to be exposed to an outside through the window layer when the at least one pixel does not operate, wherein the pixel layer may include: a first substrate including a first plane facing a first direction, and a second plane facing a second direction opposite the first direction; and a pixel electrode, a light-emitter, a cathode, and a second substrate disposed between the first plane of the first substrate and the window layer, and wherein the color layer may be disposed in the BM area.