The hex color #2f28c0 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#D0D73F. The grayscale version is
#5D5D5D. A 20% lighter version of the original color is
#625BF3, and Hex
#00008D is the 20% darker color. If the color is saturated by 10%, you get
#2A23CA. If the color is desaturated by 10%, the color
#342DB6 is obtained.