It's a slightly bluish, smoky navy. It's not a thick, winter-weight fabric. This color is perfect for spring and summer, as a dark navy can feel too heavy. Although, wearing suits in the summer is difficult these days. A blue suit is cool, but it's too flashy and limits where you can wear it. This one, on the other hand, has just the right color. There's some light soiling around the collar, so we recommend stain removal cleaning if you're concerned, but it probably won't be noticeable when worn. No boutonniere included. Dark blue LARDINI single-breasted suit with a chest pocket. - Brand: LARDINI - Color: Dark Blue - Number of buttons: 2 - Pockets: Chest pocket - Design: Single-breasted Thank you for viewing.