But looking only at the color versions of the images above it is quite clear that the HCL color space better preserves the lightness of the colors. Photoshop actually uses the CIELab colorspace when converting to grayscale, which also has to do with why the grayscale image to the right seems to have more diverse lightness between colors. In the CIELab color space however, a yellow color with a certain lightness will seem roughly as light as a blue color with the same lightness. ![]() Even though the brightness (in HSB color space) is equal, the yellow color will seem brighter due to the pixel intensities of a screen as well as the way we percieve the colors. An example of this is when comparing a yellow color to a blue color. Comparing to the most common color space used by digital artists (HSB: Hue, Saturation, Brightness) a certain lightness will be percieved equally light independent on the other two light components. The HCL color space is directly derived from the CIELab color space which is made to reduce the interference our human perception have with the colors percieved. (To create and modify registry entries you can search for the program "regedit" in the windows menu)Ī color choosen in KalleWheel is defined by the three components Hue (set by the angle from the center of the wheel), Chroma (similar to saturation, determined by the distance from the center of the wheel), and Lightness (set by the slider).
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