javascript rgb to hex
function rgbToHex(r, g, b) { return "#" + ((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1); } function hexToRgb(hex) { var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex); if(result){ var r= parseInt(result[1], 16); var g= parseInt(result[2], 16); var b= parseInt(result[3], 16); return r+","+g+","+b;//return 23,14,45 -> reformat if needed } return null; } console.log(rgbToHex(10, 54, 120)); //#0a3678 console.log(hexToRgb("#0a3678"));//"10,54,120"