While I am not a designer, I need to sometimes make very basic design works for presentations, workbooks and other visual aids I use in training. I found this tool today, which I believe will save me time and help me be more consistent in choosing the right colours.
You need to just copy the URL of a picture and the "generator" generates ;) a matching colour palette.
The picture I used to test it is taken during our company team building at Thassos in September last year. Would love to visit the place again.