Thanks in advance
Maybe this one?
The color is not that crazy, nor is the pattern. It's just rather large. Maybe a burgundy grenadine or something green could work, as could the blue that you suggested (but not with a blue shirt)/
This blazer pattern is actually more versatile than you think, even though it's patterned, since it's a neutral grey color. If it was me, I'd probably go with a simple white shirt, knit black tie combination, with navy trousers, but you could experiment with any number of neutral shirt (white, light blue, light grey) and tie color combinations. Though I'd probably stick with a solid tie to avoid clashing with the jacket's pattern.