This post is part of our spreadcheats series – 30 Excel and Charting Tips & Hacks aimed to make day to day spreadsheeting fun and productive.
One of the most common charts is “YoY Growth Rates of Our Superawesomekickass Product”. While not everyone may have a superawesomekickass product, most of us in fact make a YoY (Year on Year) growth rate charts for various types of data.
A simple label formatting hack can improve the effectiveness of these charts by adding color to differentiate positive vs. negative growth (or mediocre vs. sky rocketing growth rates). See this example:

You can get this effect by applying custom number formatting to the data label. It is one of my favorite tricks in excel and I have written about it in introduction to custom cell formatting in excel, number formatting in excel using custom codes, showing decimal values only when needed articles.
How you can get colors in Axis Labels
First apply data labels to your chart and now select the data labels and press ctrl+1 (aww, come on now, you are reading this blog, you should what ctrl+1 means) and go to numbers tab. Select “custom” as category and specify the formatting code like this:

[blue]+0%;[red]-0%
Now, that was easy, isn’t it. But you might think, “Chandoo, what the heck the above format code is doing?”
Well, it tells excel to apply red color and add a minus symbol if the data label value is less than zero and apply blue color and add + symbol if the value is above zero. You see the custom number formatting codes have 3 parts in them, like this:
formatting for positive numbers ; formatting for negative numbers ; formatting for zero values
If you are noob (hi noob!) and lost in all these codes and square brackets, you may want to checkout our post on introduction to number formatting in excel to learn more about custom codes.
Ok, that was fun, What else you can do?
You can do much more using custom codes to format data labels. For example, a code like [Red][<0.15]0%;[Blue][>=0.15]0%; will, Oh, forget it, you can guess that. Just remember that excel allows only 3 parts in custom codes. So go nuts, but just thrice.
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17 Responses to “Custom Number Formats – Colors”
You are right, Chandoo. I was playing with the colour numbers last week and some of them don't appear different from each other. Others are totally different from yours.
@Duncan
Each version of Excel, post 2003, renders colors slightly differently
Different language versions may also have different default color palettes
Hello in french
excel 2010
colo1 = couleur1 = black
[couleur1]; [couleur2]; etc..
@Hui, thank you very much again for this great post.
However - under Excel 2007, Hungarian version your solution does not work with color names. I've tried both English and Hungarian names, but drops an error message "not valid formats"
Do you have any idea how to solve this issue?
thanks in advance
@Andras
Without a Hungarian version of Excel 2003 I don't think I can assist
Have you tried using the colour numbers? I couldn't get the names to work (despite using an english version of excel). but it did work with the numbers though. I left out the "u" and was easily able to produce burgundy using [color9]
Here a possible solution: find an English version of Excel, write there the formats using English names, then open the file in the Hungarian version and see the translation.
In Excel 2007 I can't get the colour names to work e.g Sea Green but the numbers do e.g color3 - colour3 does not work so I must bow to the country that has stolen my language (ha ha!)
Hey chandoo, nice Tip!
Wouldn't be easier just apply some conditional formatting for negative numbers and another for positive numbers? Or there's some cases that you can't do that?
Unfortunately the TEXT function doesn't color the cell as number formatting does.
Hi Hui,
Great post Sir, love the new way of formatting with color numbers.
I am using 2007, and it leads me to the last color number 56.
Thanks Hui.
[…] explains how to set up custom number formats with a wide array of […]
Thanks Hui - works a treat!
Thank you, very helpful.
Trying to figure out if it is possible to apply color only to a part of the cell?
E.g. I have a value formatted as Accounting with a currency symbol.
Those I find somewhat distracting though necessary. If I could make them less obtrusive by coloring them gray while the number would stay black, that would be great. Tried tinkering with the format string, but didn't get the desired result. Single color for complete cell value works, but coloring just part of it could not be achieved. Maybe somebody managed that?
Exactly what I was looking for - thank you!
colour in the Australian doesn't work - we have to go American and no problem.
I always thought is was 56 colours notice you have 57. Cool.
thanks
Analir Pisani
Customised Microsoft Office Training Specialist
Sydney - Australia
http://www.azsolutions.com.au
Thank You!