Are there any types of obi-knots/obi that would be appropriate for both yukata and relatively informal kimono?
The two most common are the bunko and clam’s mouth or clamshell.
Bunko for yukata or kimono are tied with a hanhaba obi. Here are yukata bunko:
Bunko for kimono—the first one is a furisode and the second is a casual coordination:
How to tie bunko:
Of course there are MANY variations on the Bunko which can be as simple as fanning out the edges or making some ends longer or shorter than the other layers.
Clam’s Mouth Obi or Clamshell 貝の口
This obi knot is interesting in that it is one of the very few unisex knots! It is also the standard for summer dance For a woman’s yukata or kimono, a hanhaba obi would be used. The men’s obi is about 2/3 the width of a hanhaba so the knot would end up much smaller. At a matsuri, people often stick their fan (uchiwa) in the back of the obi to hold it.
In the photo above there is an obijime used with this obi, but it’s not needed to hold up the obi. It’s just used as decoration. This knot is appropriate for casual daily wear, such as shopping.
A colored infographic of how to tie it:
Hope this helps. You can search for 貝の口 きもの 方 or 文庫帯 きもの。
Hi there! I'm currently trying to put together a Taisho Roman-inspired yukata coordination for this summer. I'm specifically looking for a yukata with a (preferably plain) vertical red stripes pattern, but have had no luck. I wonder if I could ask your help to point me into the right direction?