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# How to convert 3-digit color code to 6-digit color code using JavaScript ?

In this article, we are converting a three-digit color HEX code into a six-digit color HEX code using JavaScript. To solve this problem, first, we copy the individual digits and paste them at the consecutive positions. For example – #34E will be converted into #3344EE and #E90 will be converted into #EE9900.

Steps to convert 3-digit color code to 6-digit color code:

Step 1: The color code is in string format. So, apply the split method on the string. After applying the split method we got an array of elements.

## Javascript

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Output:

`["#","3", "9", "E"]`

Step 2: Now apply the map method and iterate over the array and return every item with concatenating to itself and check if the item is “#” then do not return the concatenated result, just return the item.

## Javascript

 ``

Output:

`["#", "33", "99", "EE"]`

Step 3: Now use the join method to convert all the array items into a single string.

## Javascript

 ``

Output:

`"#3399EE"`

Step 4: In the above step, we are converting “#39E” but we can see the first element of this code is “#”, but if the user does not provide the “#” then you have to check if the first element is “#” then concatenate it with the resulting code. And this is our complete code.

## Javascript

 ``

Output:

`#3399EE`

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