jquery - JSON error when save color in RGB format -

i have searched around , not find answer, or maybe it's buggy in json code?

json file: {   "html": {     "content": "<div style=\"background-color: rgb(255, 255, 255); height: 11px; width: 111px;\"></div>"   } }  background-color: rgb(255, 255, 255); --> no background-color: #000000; --> ok 

php:

$jsonpathsite = '/site/01.json'; $jsonfilesite = file_get_contents($jsonpathsite); $jsonreadsite = jsondecode($jsonfilesite,true);  // saving file $jsonreadsite['html']['content'] = $content;  file_put_contents( $jsonpathsite, json_encode($jsonreadsite) ); 

its not able saved rgb format?

but if used hex format json file fine!