A light-emitting device comprising: a first element comprising: a first color filter layer configured to transmit light in a first wavelength range; and a first light-emitting element , wherein the first light-emitting element comprises: a first electrode having a reflective property; a first light-emitting layer over the first electrode having a reflective property; and a second light-emitting layer over the first light-emitting layer, and a second element comprising: a second color filter layer configured to transmit light in a second wavelength range; and a second light-emitting element , wherein the second light-emitting element comprises: a second electrode having a reflective property; the first light-emitting layer over the second electrode having a reflective property; and the second light-emitting layer over the first light-emitting layer, wherein a first central wavelength transmitted by the first color filter layer is shorter than a second central wavelength transmitted by the second color filter layer, characterized in that a first optical path length between the first electrode having a reflective property and the first light-emitting layer in the first element is one-quarter of the first central wavelength, and a second optical path length between the second electrode having a reflective property and the second light-emitting layer in the second element is three-quarters of the second central wavelength. a first element comprising: a first color filter layer configured to transmit light in a first wavelength range; and a first light-emitting element , a first color filter layer configured to transmit light in a first wavelength range; and a first light-emitting element , wherein the first light-emitting element comprises: a first electrode having a reflective property; a first light-emitting layer over the first electrode having a reflective property; and a second light-emitting layer over the first light-emitting layer, and a first electrode having a reflective property; a first light-emitting layer over the first electrode having a reflective property; and a second light-emitting layer over the first light-emitting layer, a second element comprising: a second color filter layer configured to transmit light in a second wavelength range; and a second light-emitting element , a second color filter layer configured to transmit light in a second wavelength range; and a second light-emitting element , wherein the second light-emitting element comprises: a second electrode having a reflective property; the first light-emitting layer over the second electrode having a reflective property; and the second light-emitting layer over the first light-emitting layer, a second electrode having a reflective property; the first light-emitting layer over the second electrode having a reflective property; and the second light-emitting layer over the first light-emitting layer, wherein a first central wavelength transmitted by the first color filter layer is shorter than a second central wavelength transmitted by the second color filter layer, characterized in that a first optical path length between the first electrode having a reflective property and the first light-emitting layer in the first element is one-quarter of the first central wavelength, and a second optical path length between the second electrode having a reflective property and the second light-emitting layer in the second element is three-quarters of the second central wavelength. <EOS>