The hex color #231AF1 is a dark color. The web-safe version is Hex
#3333FF. A complementary color is
#DCE50E. The grayscale version is
#656565. A 20% lighter version of the original color is
#564DFF, and Hex
#0000BE is the 20% darker color. If the color is saturated by 10%, you get
#1C13FF. If the color is desaturated by 10%, the color
#2A21E3 is obtained.