Hi! Loving the youthful vibe of your space! Gray and dark wood tones would definitely work since it would match your current pieces (bar stools and sofa). But you could also opt for neutrals colors (Taupes, browns, and other shades of gray), and black. You could even choose pieces with metal bases or accents that will match your current lighting, let's say your brass pendant lighting by the living area?

Here, I have a few suggestions that you may find interesting:

Modloft Wooster Modern Classic Castle Grey Eco Leather Dining Arm Chair

Frances Mid Century White Chevron Upholstered Wood Legs Dining Side Chair

Resource Decor Soho Modern Classic Beige Black Wood Dining Arm Chair

Joaquin Industrial Loft Black Leather Bronze Iron Dining Side Chair

Modloft Orchard Modern Classic Warm Grey Leather Wood Dining Side Chair

Boyd Reform Brass Cap Speckled Black Retro Side Chair

Interlude Luna Modern Beige Chenille Gold Steel Dining Side Chair - Set of 2

We do have other Dining Room Chairs for you to choose from. Also, we'd love to connect with you and help you design your lovely space! You may look through our design services or we can schedule a call with you to get to know you and your design needs and wants better. Thank you and have a great day!