function rgb2hex(sRGB) { let rgb = sRGB.replace(/[\s*|rgb\(|\)]/gi, '').split(',') let hexCode = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'] for(let i=0,imax=rgb.length; i<imax;i++) { if(isNaN(+rgb[i])){ return sRGB } let v = +rgb[i] if (v > 255) { return s...