The hex color #2a3db0 is a dark color. The web-safe version is Hex
#333399. A complementary color is
#D5C24F. The grayscale version is
#5D5D5D. A 20% lighter version of the original color is
#5D70E3, and Hex
#000A7D is the 20% darker color. If the color is saturated by 10%, you get
#253AB8. If the color is desaturated by 10%, the color
#2F40A8 is obtained.