The hex color #2d23d0 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#D2DC2F. The grayscale version is
#606060. A 20% lighter version of the original color is
#6056FF, and Hex
#00009D is the 20% darker color. If the color is saturated by 10%, you get
#281DDB. If the color is desaturated by 10%, the color
#3229C5 is obtained.