I just painted my bedroom and master bath SW Alabaster with SW High Reflective White trim and doors. I LOVE the look, both colors work beautifully together. Depending on the time of day (morning sun) it looks white without being too stark white, as the day progresses it warms up turning into a vanilla cream in the evenings. My bedroom is west facing with more windows and a small south window. My master bath is west facing. The High Reflective White stays pretty true to color at all times. Unfortunately they were not able to do the cabinets in HRW as the paint I used on the cabinets could not be mixed in that color. HRW is a color that is funny at Sherwin Williams and kinda' tricky and definitely takes more coats to cover. I used Emerald paint in Alabaster on ceilings, walls, and cabinets in different finishes and Super Paint in Semi Gloss in HRW for trim and doors. I was nervous about using Alabaster on the cabinets in the bathroom but it worked perfectly. I will say, for those that are using a white on walls that is not as warm as Alabaster/White Dove, or more cooler grays (think grays that aren't greige) the Alabaster or White Dove warm soft whites are going to go yellow/cream. I would recommend going with Pure White for cabinets and trim. It is still a soft white without the creaminess of Alabaster. High Reflective White is also a good white it's not as soft as Pure White but still not so white that it looks cheap, but again HRW is hard to cover and cannot be mixed in many sheens and paints. I decided not to go with Pure White with my Alabaster walls because my husband wanted more of a contrast with the doors and trim, I wanted to use Alabaster on everything, but made a compromise with my husband, and went with HRW. I am not at all disappointed with the look. I know I spent countless hours agonizing over the choices and hopefully this will help others that are in the same position.

Everything depends on the architectural style of your house, and your other finishes, furnishings and equipment. One doesn't simply design a fireplace in isolation here on this forum and think that it's going to fit in and complement your interiors. Can you say something more about your interior design and furnishings? Here's a range of ideas. Do you see how some may fit your specific interiors and others not? The fact that the ceiling beams are in place and do not consider the location and design of your fireplace is problematic, and probably means it will be best to not carry any sort of fireplace treatment up to the intersection with the ceiling and beams unless it can be done in some sort of visually logical connection. See one of the photos below for an example. Good luck on your project.

the room is sherwin williams rare grey, and does not have alot of natural light, just not sure which white would go well with this color

I apologize for not being clear I want to shiplap the wall in front on the yellow barstools. My kitchen cabinets are a dark brown and an accent wall cut out is pewter. I'm having a hard time deciding on a color...do I try and match the dark cabinets or go with a color closer to the pewter accent.