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With more than 50 non-fiction books and numerous magazine articles to his credit, Allen Wyatt is an internationally recognized author. He is president of Sharon Parq Associates, a computer and publishing services company.

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** Please Note:** This article is written for users of the following Microsoft Excel versions: 97, 2000, 2002, and 2003. If you are using a later version (Excel 2007 or later),

Neil uses colors a lot in his worksheets. He knows that he can generate a color based upon a numeric RGB value (and as explained in other *ExcelTips* issues). Neil would like to do the opposite—determine an RGB value. He wonders if there is a way to return (via function or macro) the RGB value of the color used to fill a cell.

Excel doesn't include a function to do this, but you can create your own user-defined function. The function you use depends on what you want to actually have returned to your worksheet. For instance, if you want to have the traditional six-character hex code for RGB colors returned, you would use the following very simple macro:

Function getRGB1(rcell) As String Dim sColor As String sColor = Right("000000" & Hex(rcell.Interior.Color), 6) getRGB1 = Right(sColor, 2) & Mid(sColor, 3, 2) & Left(sColor, 2) End Function

This macro looks at the interior color for any cell you reference, puts the hex values for the color in the right order, and returns the string to Excel. To use the function you simply invoke it, in your worksheet, with a cell referenced in this manner:

=getRGB1(B4)

You may not want the traditional hex codes for the RGB colors, however. If you want to get the decimal values for each of the colors, then the following macro returns that:

Function getRGB2(rcell) As String Dim C As Long Dim R As Long Dim G As Long Dim B As Long C = rcell.Interior.Color R = C Mod 256 G = C \ 256 Mod 256 B = C \ 65536 Mod 256 getRGB2 = "R=" & R & ", G=" & G & ", B=" & B End Function

Invoked the same way as the getRGB1 macro, this version returns a string such as "R=255, G=204, B=0". You can also modify the macro even further so that it returns a single value, based upon a parameter you set:

Function getRGB3(rcell As Range, Optional opt As Integer) As Long Dim C As Long Dim R As Long Dim G As Long Dim B As Long C = rcell.Interior.Color R = C Mod 256 G = C \ 256 Mod 256 B = C \ 65536 Mod 256 If opt = 1 Then getRGB3 = R ElseIf opt = 2 Then getRGB3 = G ElseIf opt = 3 Then getRGB3 = B Else getRGB3 = C End If End Function

To use the macro, simply add a second parameter to the function used in your worksheet, specifying what you want:

=getRGB3(B4,1)

If the second parameter is 1, then the function returns just the red value. If you specify a second parameter of 2, then the green value is returned, and 3 returns the blue value. Any other value for the second parameter (or if you omit it entirely) returns the full decimal value of the interior color.

If you don't want to go the route of creating a macro, or if you want to determine colors in more than just your Excel worksheet, you might consider a third-party utility. One that looks interesting is Instant Eyedropper, which is free. You can find more information about it here:

http://instant-eyedropper.com

*ExcelTips* is your source for cost-effective Microsoft Excel training. This tip (10179) applies to Microsoft Excel 97, 2000, 2002, and 2003. You can find a version of this tip for the ribbon interface of Excel (Excel 2007 and later) here: Determining the RGB Value of a Color.

*Related Tips:*

**Excel Smarts for Beginners!** Featuring the friendly and trusted *For Dummies* style, this popular guide shows beginners how to get up and running with Excel while also helping more experienced users get comfortable with the newest features. Check out *Excel 2013 For Dummies* today!

RGB2 is very usefull.thanks

If the question is "What is the RGB value for an existing cell the simplest method is:

Click on the cell

Right click the cell

In the pulldown list, click 'fill'

In the next pulldown, click 'more colors'

and finally click on 'standard'

Your RGB numbers are shown.

Click on the cell

Right click the cell

In the pulldown list, click 'fill'

In the next pulldown, click 'more colors'

and finally click on 'standard'

Your RGB numbers are shown.