The hex color #2b34b0 is a dark color. The web-safe version is Hex
#333399. A complementary color is
#D4CB4F. The grayscale version is
#5A5A5A. A 20% lighter version of the original color is
#5E67E3, and Hex
#00017D is the 20% darker color. If the color is saturated by 10%, you get
#2630B9. If the color is desaturated by 10%, the color
#3038A7 is obtained.