RGB color space is also more accurate to human color sensory than CMYK. When the same amount of contrast colors such as yellow/blue ... After you add the Hue/Saturation as an adjustment layer you can ...

Following are the conversion formulas from RGB to YUV and from YUV to RGB. See YUV and color space conversion. From RGB to YUV Y = 0.299R + 0.587G + 0.114B U = 0.492 (B-Y) V = 0.877 (R-Y ...