This paper reports the development of high-brightness light-emitting diodes (PeLEDs) based on solution-processed organometal halide perovskites. The authors demonstrate electroluminescence in near-infrared, green, and red light by tuning the halide compositions in the perovskite. In the infrared device, a 15 nm layer of CH3NH3PbI3-xClx perovskite is sandwiched between TiO2 and F8 layers, confining electrons and holes for radiative recombination. The device achieved an infrared radiance of 13.2 W sr-1 m-2 at a current density of 363 mA cm-2, with external and internal quantum efficiencies of 0.76% and 3.4%, respectively. In the green light-emitting device, an ITO/PEDOT:PSS/CH3NH3PbBr3/F8/Ca/Ag structure achieved a luminance of 364 cd m-2 at a current density of 123 mA cm-2, with external and internal quantum efficiencies of 0.1% and 0.4%, respectively. The study shows that radiative bimolecular recombination is dominant at higher excitation densities, leading to increased quantum efficiencies at higher current densities. The demonstration of effective perovskite electroluminescence opens the door for developing this material class into efficient and color-tunable light emitters for low-cost display, lighting, and optical communication applications.This paper reports the development of high-brightness light-emitting diodes (PeLEDs) based on solution-processed organometal halide perovskites. The authors demonstrate electroluminescence in near-infrared, green, and red light by tuning the halide compositions in the perovskite. In the infrared device, a 15 nm layer of CH3NH3PbI3-xClx perovskite is sandwiched between TiO2 and F8 layers, confining electrons and holes for radiative recombination. The device achieved an infrared radiance of 13.2 W sr-1 m-2 at a current density of 363 mA cm-2, with external and internal quantum efficiencies of 0.76% and 3.4%, respectively. In the green light-emitting device, an ITO/PEDOT:PSS/CH3NH3PbBr3/F8/Ca/Ag structure achieved a luminance of 364 cd m-2 at a current density of 123 mA cm-2, with external and internal quantum efficiencies of 0.1% and 0.4%, respectively. The study shows that radiative bimolecular recombination is dominant at higher excitation densities, leading to increased quantum efficiencies at higher current densities. The demonstration of effective perovskite electroluminescence opens the door for developing this material class into efficient and color-tunable light emitters for low-cost display, lighting, and optical communication applications.