I’d pick the black version🙌
On the white one, the current shadow makes the navigation and button look less clean.
In the black version, this issue isn’t noticeable, so it feels more polished overall.
The navbar's color in dark mode should be changed to something close to dark and the logos of the companies also the white seems too high if u can reduce either their opacity or change the white colour
I’d pick black if this is a daily use ops tool. The darker surface makes the content feel calmer and more focused, especially with dashboards or long sessions. White feels friendlier, but also a bit more “marketing page” to me