The hex color #2B27A8 is a dark color. The web-safe version is Hex
#333399. A complementary color is
#D4D857. The grayscale version is
#535353. A 20% lighter version of the original color is
#5E5ADB, and Hex
#000075 is the 20% darker color. If the color is saturated by 10%, you get
#2723B0. If the color is desaturated by 10%, the color
#2F2BA0 is obtained.