Transparent ARGB hex value

Question

The colors in this table is all not transparent  I guess the value for the A is set to FF   What is the code for transparency    For example this color FFF0F8FF  AliceBlue   to a transparent code such as   F0F8FF

User · Answer

Adding to the other answers and doing nothing more of what @Maleta explained in a comment on https://stackoverflow.com/a/28481374/1626594, doing alpha*255 then round then to hex. Here's a quick converter http://jsfiddle.net/8ajxdLap/4/

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function rgb2hex(rgb) {_x000D_
  var rgbm = rgb.match(/^rgba?[\s+]?\([\s+]?(\d+)[\s+]?,[\s+]?(\d+)[\s+]?,[\s+]?(\d+)[\s+]?,[\s+]?((?:[0-9]*[.])?[0-9]+)[\s+]?\)/i);_x000D_
  if (rgbm && rgbm.length === 5) {_x000D_
    return "#" +_x000D_
      ('0' + Math.round(parseFloat(rgbm[4], 10) * 255).toString(16).toUpperCase()).slice(-2) +_x000D_
      ("0" + parseInt(rgbm[1], 10).toString(16).toUpperCase()).slice(-2) +_x000D_
      ("0" + parseInt(rgbm[2], 10).toString(16).toUpperCase()).slice(-2) +_x000D_
      ("0" + parseInt(rgbm[3], 10).toString(16).toUpperCase()).slice(-2);_x000D_
  } else {_x000D_
    var rgbm = rgb.match(/^rgba?[\s+]?\([\s+]?(\d+)[\s+]?,[\s+]?(\d+)[\s+]?,[\s+]?(\d+)[\s+]?/i);_x000D_
    if (rgbm && rgbm.length === 4) {_x000D_
      return "#" +_x000D_
        ("0" + parseInt(rgbm[1], 10).toString(16).toUpperCase()).slice(-2) +_x000D_
        ("0" + parseInt(rgbm[2], 10).toString(16).toUpperCase()).slice(-2) +_x000D_
        ("0" + parseInt(rgbm[3], 10).toString(16).toUpperCase()).slice(-2);_x000D_
    } else {_x000D_
      return "cant parse that";_x000D_
    }_x000D_
  }_x000D_
}_x000D_
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$('button').click(function() {_x000D_
  var hex = rgb2hex($('#in_tb').val());_x000D_
  $('#in_tb_result').html(hex);_x000D_
});

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body {_x000D_
  padding: 20px;_x000D_
}

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<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
Convert RGB/RGBA to hex #RRGGBB/#AARRGGBB:<br>_x000D_
<br>_x000D_
<input id="in_tb" type="text" value="rgba(200, 90, 34, 0.75)"> <button>Convert</button><br>_x000D_
<br> Result: <span id="in_tb_result"></span>

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User · Answer

Just came across this and the short code for transparency is simply  00000000

User · Answer

Just use this    android background   00FFFFFF   it will do your work

User · Answer

If you have your hex value  and your just wondering what the value for the alpha would be  this snippet may help    x000D   x000D  const alphaToHex    alpha   gt    x000D    if  alpha  gt  1    alpha  lt  0    isNaN alpha     x000D      throw new Error  The argument must be a number between 0 and 1    x000D      x000D    return Math ceil 255   alpha  toString 16  toUpperCase    x000D     x000D   x000D  console log alphaToHex 0 45    x000D   x000D   x000D

User · Answer

BE AWARE  In HTML CSS  browser code  the format is  RRGGBBAA with the alpha channel as last two hexadecimal digits

User · Answer

Here is the table of   to hex values   Example  For 85  white  you would use  D9FFFFFF               Here 85     D9   amp  White    FFFFFF      100      FF 95      F2 90      E6  85      D9  80      CC 75      BF 70      B3 65      A6 60      99 55      8C 50      80 45      73 40      66 35      59 30      4D 25      40 20      33 15      26 10      1A 5      0D 0      00   How is it calculated   FF is number written in hex mode  That number represent 255 in decimal  For example  if you want 42  to calculate you need to find 42  of numbeer 255 and convert that number to hex  255   0 42    107 107 to hex is  6B     maleta

User · Answer

Transparency is controlled by the alpha channel  AA in  AARRGGBB   Maximal value  255 dec  FF hex  means fully opaque  Minimum value  0 dec  00 hex  means fully transparent  Values in between are semi-transparent  i e  the color is mixed with the background color   To get a fully transparent color set the alpha to zero  RR  GG and BB are irrelevant in this case because no color will be visible  This means  00FFFFFF   transparent White   is the same color as  00F0F8FF   transparent AliceBlue    To keep it simple one chooses black   00000000  or white   00FFFFFF  if the color does not matter   In the table you linked to you ll find Transparent defined as  00FFFFFF

[colors] Transparent ARGB hex value

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