I don't think it's too muted or dull, but i do think it's a tad washed out and pink,
you have some really bizarre mixed perspective going on down through the image, which i can't really help with at the moment,
but something easy to adress I can identify is the way you have been lightin different planes/surface angles, without any overall consistency, here's an edit with both colour adjustments keeping within your mood, and also suggestions like shadows to reinforce the dimension, and the most important part, lighting each plane angle, there is some evidence of this in your image but it's not being applied consistently enough, it means you have to limit the value range of each surface to better represent it's angle, otherwise it will read flat. for example in the illustration at the bottom, the ground angle plane is brighter, so have any flat ground angle surface a brighter value range.
As you are trying to establish a clear read on the dimensions it's important to put consideration into this kinda thing, hopefully this helps.

also a warning with props like those barrels DON'T side light them, it'll make them look out of place with the rest of the environment, try keeping a top down lighting regime. also they are out of perspective, make the lid more circular, just like those jetty posts.