This color theme uses only colors close to each other on the color wheel. This color theme has built-in color harmony and mood and tends to create soothing / good feeling artwork.
A cool analogous color scheme will have a much different feeling from a warm analogous theme. And bright and/or muted colors can be used for different effects. Even within these limited color ranges, there are a huge number of options.
Feel free to email me with questions.
Warm (photos with all / mostly or predominately reds, oranges, and/or yellows)
Could be warm or cool (or neither)
Cool (photos with all /mostly or predominately violets, blues, and/or greens)
This one’s a stretch: