This is a great space! You already have so much blue and gray...why don't you brighten things up a bit with a pale yellow, such as Lemonade 2024-60 by Benjamin Moore.

Thank you both for the advice....@mm457 that is the color I was really thinking about....@porterdesigns I thought of the yellow color also and it makes a lot of sense the way you describe the room having so much blue and grey already..... my sister also suggested using yellow because of the amount of blue and black.

This is a wider area of the room

The closet door.....

@ porterdesigns...I found a color yellow you suggested in BEHR Premium Plus 340....still waiting on my hubby to get the job done. I am so excited to see the finished job, can't wait....I am painting the closet doors in white semi-gloss......

Because of your navy blue upholstery, I'd do a very soft, soft blue in either Benjamin Moore HC-150 Yarmouth Blue or HC-147 Woodlawn Blue.
For a gray I'd try HC-171 Wickham Gray.

Oh and paint out your closet doors a bright white high gloss - same with all trim - either paint the garage door metal high gloss black, or delete it with same high gloss white.

Black, White, Gray/Blue scheme photos attached for your inspiration - good Luck

UPDATE: This is a sneek preview of my office/ sewing room with the new yellow color on the walls....