How do I write a RGB color value in JavaScript?

I am trying to change the color of the function swapFE() below and I can't figure out how to write it. I was told to change the color of the phrase node to the color value (155, 102, 102). I tried to do that as you can see at the end of the function see- parent.childNodes[1].style.color= (155, 102, 102); but it just comes out a dark navy blue. It's supposed to be a brownish red. I have no idea what I'm doing wrong. How can I fix this to get the correct RGB color? I know I have the rest right it's just figuring out how to write the color and the value that's giving me problems. Thanks!

//this function changes the French phrase to an English phrase. 
    function swapFE(e) { 
           var phrase = e.srcElement;  
           //phrase.innerText = english[phrase.id]; 
           var parent = phrase.parentNode; 
           //childNodes[0] is the number of the phrase +1  
           var idnum = parent.childNodes[0]; 
           //parseInt takes a textstring and extracts it to make a number. Then you will subtract 1 from the number. 

       var phrasenum = parseInt(idnum.innerHTML)-1; 
       phrase.innerText = english[phrasenum]; 
       parent.childNodes[1].style.fontStyle= "normal"; 
       parent.childNodes[1].style.color= (155, 102, 102); 
  } 


function swapEF(e) { 
       var phrase = e.srcElement;  
       //phrase.innerText = english[phrase.id]; 
       var parent = phrase.parentNode; 
       var idnum = parent.childNodes[0]; 
       var phrasenum = parseInt(idnum.innerHTML)-1; 
       phrase.innerText = french[phrasenum]; 
       parent.childNodes[1].style.fontStyle= "italic"; 
       parent.childNodes[1].style.color= "black"; 

try:

parent.childNodes[1].style.color = "rgb(155, 102, 102)"; 

Or

parent.childNodes[1].style.color = "#"+(155).toString(16)+(102).toString(16)+(102).toString(16);