I am trying to add 14+ different colors into the stock Calendar application on SharePoint online. I am happy to work within the CSS to do this, but I want 14 different colors, I'd like to choose these colors, and I would like them to display just as they would in a regular color-coded calendar overlay.

What I need: 14> colors that I can preset to different categories using the Calendar overlay option within the SharePoint stock Calendar.

What I don't need: I know how to overlay, and I know about the 9 basic colors. I would also be open to learning how to change these 9 preset colors, but so far I have only found help for on-premise SharePoint servers, not SharePoint Online.

  • Try here: planetwilson.co.uk/sharepoint-2013-colour-calendar-v2/… am not sure if it works online, but none of the configuration would require touching server. Commented Mar 24, 2016 at 18:02
  • This link went to a blank page unfortunately... Commented Mar 24, 2016 at 18:07
  • I can't help either, but I came across it this week. This guy might be able to help. He seems to do everything by code on page. He offers consulting by the hour. -No disclaimer needed, I'm not him and I don't know him, or have an business with him. blog.pathtosharepoint.com
    – Jammin4CO
    Commented Mar 24, 2016 at 18:08
  • Does it allow you to overlay that many calendars? I've overwritten the preset colors before, but they rely on the classes labeled 1 through 9.
    – Erin L
    Commented Mar 24, 2016 at 18:52

2 Answers 2


SharePoint does not allow you to have more than 10 overlays on a calendar, its hard coded that way. You can read more about that here if you like.

As far as changing the colors of the calendar overlay goes; you can modify that with CSS. The calendar overlays all have specific classes (e.g .ms-acal-color2. .ms-acal-selcolor2, .ms-acal-apanel-color2). These go from the default color all the way up to the 9th (.ms-acal-apanel-color9).

Here's an example that will adjust the first two colors:






Be aware this will not be represented in the UI when you pick the colors, only when you have them chosen and are viewing the calendar.

Here is a useful link with more detail related to the CSS around changing the colors.


I would color code each category for calendar because you can have more than 10 categories, also customized different colors. Check this link it works well for me :)

Hope this helps!

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