A method for adjusting a color point (507, 509, 511) of light emitted from an organic light emitting diode OLED by using current with a modulated waveform for driving the OLED, the waveform being characterized by at least three different parameters as a group of parameters and the color point (507, 509, 511) being located in a color space, the method comprising: - defining a desired light output of the OLED defined by a color point target surrounded by a predefined target area by an adjusting unit; - determining a set of groups of parameters, wherein each group of parameters of the set of groups of parameters is defining a specific shape of the modulated waveform by the adjusting unit; - for each group of the parameters of the set of groups of parameters calculating an averaged color point resulting in color shift point area comprising multiple traces of color points obtained from varying all the parameters by the adjusting unit, wherein the waveform is sampled to N samples over its period and the calculation of the averaged color point comprises a summation over at least one period of the waveform of every color point (507, 509, 511) associated to the current amplitude at each point in time of the modulated waveform, weighting the summation by a luminance associated to the current amplitude at each point in time of the modulated waveform, wherein the summation is performed assuming that the luminance is linearly correlated to the current; - employing the waveform corresponding to the group of parameters of the set of groups of parameters for which the resulting light output of the OLED is lying within the predefined target area and the brightness of the OLED remains at a predefined level and providing the current with the modulated waveform to the OLED by a driver unit. - defining a desired light output of the OLED defined by a color point target surrounded by a predefined target area by an adjusting unit; - determining a set of groups of parameters, wherein each group of parameters of the set of groups of parameters is defining a specific shape of the modulated waveform by the adjusting unit; - for each group of the parameters of the set of groups of parameters calculating an averaged color point resulting in color shift point area comprising multiple traces of color points obtained from varying all the parameters by the adjusting unit, wherein the waveform is sampled to N samples over its period and the calculation of the averaged color point comprises a summation over at least one period of the waveform of every color point (507, 509, 511) associated to the current amplitude at each point in time of the modulated waveform, weighting the summation by a luminance associated to the current amplitude at each point in time of the modulated waveform, wherein the summation is performed assuming that the luminance is linearly correlated to the current; - employing the waveform corresponding to the group of parameters of the set of groups of parameters for which the resulting light output of the OLED is lying within the predefined target area and the brightness of the OLED remains at a predefined level and providing the current with the modulated waveform to the OLED by a driver unit.