Abstract: A display backlight is described which produces white light of a specified color point and from light sources of different chromaticities and in which the red wavelengths emitted by the light sources are emitted by light sources of two or more chromaticities from the group of at least three different chromaticities and arranged to be driven with the result that visible, red-colored artifacts are reduced at boundaries of high image contrast when the backlight is coupled to further display components and used for display of a grey scale image. The invention allows production of a display with an adjustable white color point but which also does not suffer from distracting red, fringe-like artefacts reported by users of displays comprising white backlights produced from red, green and blue light sources. A display incorporating the backlight is also described.