The hex color #2e30a9 is a dark color. The web-safe version is Hex
#333399. A complementary color is
#D1CF56. The grayscale version is
#585858. A 20% lighter version of the original color is
#6163DC, and Hex
#000076 is the 20% darker color. If the color is saturated by 10%, you get
#2A2CB1. If the color is desaturated by 10%, the color
#3234A1 is obtained.