The blue is very vivid and striking. I like this very much.
The loincloth is a bit of a let down when compared to the rest. I think the contrast is off. One thing that will make it stand out a bit more is if you add a little orange to it, you could even wash it or glaze it with orange so it has a hint of color, that would do it wonders without having this massivlely orange towel hangin' fromn his trousers.
BTW, if you didn't know, orange is a natural contrast to blue, so they play off each other fairly well. I don't know what you background is so...
I feel I should point out that I do mean just a hint of orange. Like a very pale orange color, not that it dominates the paint scheme, but makes it more interesting, visually. I hope this makes sense.