Colors that match with Klein blue

Quick answer：

Klein blue, also known as International Klein Blue (IKB), is a deep, vivid blue pigment. Colors that complement Klein blue include vibrant greens, reds, and oranges, which can create a striking contrast. Neutral tones like black, white, and gray can also work well. For a harmonious blend, consider using shades of blue, purple, or pink that are slightly lighter or darker than Klein blue.