How do I write a RGB color value in JavaScript?

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.

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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”;

Solutions/Answers:

Solution 1:

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);

Solution 2:

Here’s a simple function that creates a CSS color string from RGB values ranging from 0 to 255:

function rgb(r, g, b){
  return "rgb("+r+","+g+","+b+")";
}

Alternatively (to create fewer string objects), you could use array join():

function rgb(r, g, b){
  return ["rgb(",r,",",g,",",b,")"].join("");
}

The above functions will only work properly if (r, g, and b) are integers between 0 and 255. If they are not integers, the color system will treat them as in the range from 0 to 1. To account for non-integer numbers, use the following:

function rgb(r, g, b){
  r = Math.floor(r);
  g = Math.floor(g);
  b = Math.floor(b);
  return ["rgb(",r,",",g,",",b,")"].join("");
}

Solution 3:

this is better function

function RGB2HTML(red, green, blue)
{
    var decColor =0x1000000+ blue + 0x100 * green + 0x10000 *red ;
    return '#'+decColor.toString(16).substr(1);
}

Solution 4:

I am showing with an example of adding random color. You can write this way

var r = Math.floor(Math.random() * 255);
var g = Math.floor(Math.random() * 255);
var b = Math.floor(Math.random() * 255);
var col = "rgb(" + r + "," + g + "," + b + ")";
parent.childNodes[1].style.color = col;

The property is expected as a string

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Solution 5:

dec2hex = function (d) {
  if (d > 15)
    { return d.toString(16) } else
    { return "0" + d.toString(16) }
}
rgb = function (r, g, b) { return "#" + dec2hex(r) + dec2hex(g) + dec2hex(b) };

and:

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

References