ImagickPixel::setHSL Sets the normalized HSL color &reftitle.description; boolImagickPixel::setHSL floathue floatsaturation floatluminosity &warn.undocumented.func; Sets the color described by the ImagickPixel object using normalized values for hue, saturation and luminosity. &reftitle.parameters; hue The normalized value for hue, described as a fractional arc (between 0 and 1) of the hue circle, where the zero value is red. saturation The normalized value for saturation, with 1 as full saturation. luminosity The normalized value for luminosity, on a scale from black at 0 to white at 1, with the full HS value at 0.5 luminosity. &reftitle.returnvalues; &imagick.return.success; &reftitle.notes; Available with ImageMagick library version 6.2.9 and higher.