Whether orange (a secondary color) has you at hello, or doesn't quite attract your attention, you can't deny the strength it has when correctly used in an room. I thought it would be fun to pull some of the pages from my color relationship notebook from a color theory class I completed a few years ago to show you a few examples of color relationships when orange is involved.

Here's a modified triad. You are mixing various tints and tones on the color wheel in yellow-green, yellow-orange, and red-orange.

This is a complementary color scheme in orange and blue. Blue calms the intensity of orange, so there's a nice balance here.

And this is what you'd call monotone in yellow-orange. Notice how muted and soft orange can become?

Isn't it fascinating to see the color wheel in action? I highly suggest purchasing one (they're around $3 at any craft or art supply store), and either taking a color theory class at your local college, or find something reliable online where you can learn the basic principles. I prefer the classroom experience myself, as you are able to receive honest critiques, which I find are essential to growth, at least for me. Plus, color theory class is more than creating binders and clipping from magazines. You have to do a lot of painting, sometimes with tears because the process can be strenuous, but in the end, 100% worth it. Here's a little color theory intro to get you started...

(images from Holly Becker for decor8)