International Klein Blue color hex code is #1F18C0

International Klein Blue has the hex code #1F18C0. The equivalent RGB values are (31, 24, 192), which means it is composed of
13% red, 10% green and 78% blue. The CMYK color codes, used in printers, are C:84 M:88 Y:0 K:25. In the HSV/HSB scale, International Klein Blue has a hue of 243°, 88% saturation and a brightness value of 75%.
Details of other color codes including equivalent web safe and HTML & CSS colors are given in the table below. Also listed are the closest Pantone® (PMS) and RAL colors.

This deep hue of blue was created by the French artist Yves Klein who also tried to register the paint formula. It was developed with the help of the Klein’s paint supplier, Edouard Adam, of Paris. The color is quite popular, for instance, being used by the Blue Man group and has songs and even a music band named after it.