FIXED: How do I give different colors to the Bar chart? - Official support forum

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RGraph is a JavaScript charts library based on HTML5 SVG and canvas. RGraph is mature (over 18 years old) and has a wealth of features making it an ideal choice to use for showing charts on your website.

Version 7.20

Version 7.20 (released in June 2026) is the latest version of RGraph and the major change in this version is an update to the default values of properties making for better looking charts without having to set any properties. Read more about this and other changes in the changelog.

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Get the latest version of RGraph (version 7.20, 9th June 2026) from the download page. You can read the changelog here. There's also older versions available, minified files and links to cdnjs.com hosted libraries.

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Latest forum posts

These are the latest support forum posts that have been posted or updated.

16th June, Rachel
I have a question about the 3D Bar chart

12th June, Marco
Should I use SVG or canvas for the charts on my website?

9th June, Richard
New version of RGraph: version 7.20

3rd June, Patrick
Question about installing RGraph

1st June, Ouja
How do I add a click event to a bar in my Bar chart?

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License

RGraph can be used for free under the GPL or if that doesn't suit your situation there's an inexpensive (£129) commercial license available.

How do I give different colors to the Bar chart?

Hello RGraph team,
my question is simple, how can I set different colors to the bar graph, in the way that each balk should have its owne color.
The idea is to markup special bars (in an interval from index x to y) with a different color,
as an example let say will be needed 10 bars where the balks from 4 to 8 should be green and the rest white: [white,white,white,green,green,green,green,green,white,white]
is this possible with the actual rgraph API?(I don't see a way to reach that)
Thank you in advance
kind regards

You can do this by specifying the colorsSequential option. That way the colors are used as you give them in the colors: option. There's an SVG demo in the archive that shows this option:

demos/svg-bar-colors-sequential.html

The canvas version is just the same however.

If you want to specify one color for each bar on your chart, you can do that. This way, you can give each bar a different color if you want.