Lighting and/or signalling device in which the colour is different when the eye is on or off

The invention relates to a lighting and/or signaling device (1), in particular for a motor vehicle, comprising an optical system (2) provided with a light source (S) configured to emit a light beam in an initial color (F1), said device further comprising a lens (3) arranged so as to be traversed by said beam, said lens (3) being colored in such a way as to transmit said beam in a resulting color (F2). According to the invention, said device (1) further comprises a filter (4) configured so as to bring the resulting color (F2) of said beam closer to its initial color (F1).