Your best option actually is a custom match. Paint colors are very specific to the brand that produces them, so it is virtually impossible to find a "matching" color from another brand. I end up using different brands of paint in the same room for this very reason. (White is very tricky and most brands don't get it right.)

Looks like "Jute Brown" or "Craft Paper" from Sherwin-Williams. You're best off looking at swatches, because anything on your monitor will look different under different kinds of light.

I believe Lowe's sells S-W (avoid Behr from Home Depot - I love HD but their paint is terrible). If you're lucky enough to have a Hallman Lindsay nearby, head there.

But yeah... swatches will be your friend more than color matching, I think.