The hex color #2d30a4 is a dark color. The web-safe version is Hex
#333399. A complementary color is
#D2CF5B. The grayscale version is
#565656. A 20% lighter version of the original color is
#6063D7, and Hex
#000071 is the 20% darker color. If the color is saturated by 10%, you get
#292CAC. If the color is desaturated by 10%, the color
#31349C is obtained.