Will it be distracting to shift from dark to light background?

I’m working on a portfolio and the landing page I imagined with dark background and white text, while rest of the pages are normal black text on white background. This landing page won’t be scrollable as it will be as tall as the viewport. Meaning, the user won’t see a white section or page until they click a menu and navigate to other pages. I was wondering if this transition will be too distracting. It’s my first ux portfolio and I would not want users to feel uncomfortable for this. From the visual perspective, the user may feel uncomfortable, only if the webpage is being seen in a dark room. Problem is I couldn’t find enough data to either accept or refute this assumption. So I’m relying on visual design principles to predict the outcome. Is the flow going to cause the visual disturbance that I’m dreading?

Important to mention that the black colour is one of the primary colour of the branding but I don’t want to have the whole site in black.