a method for a color tone correction is disclosed . the method generally includes the steps of generating a plurality of first intermediate components by scaling a plurality of first color components towards a first ideal color , wherein the first color components are for a first plurality of pixels in an input video signal and fall inside a first region of a color space , generating a plurality of first corrected components by adjusting the first intermediate components such that a first mapping of the first color components to the first corrected components is both continuous in the color space and non - overlapping in the color space and generating an output video signal by combining the first corrected components with a plurality of unaltered color components , wherein the unaltered color components are for a second plurality of the pixels and fall outside the first region .