//fonctions javascript
function dechex(n) {
    var strhex = "0123456789ABCDEF";
    return strhex.charAt(Math.floor(n/16)) + strhex.charAt(n%16);
}
function getColor(r,g,b) {
    var new_color = '#'+dechex(r)+dechex(g)+dechex(b);
    return new_color;
}