The hex color #2e28d5 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#D1D72A. The grayscale version is
#646464. A 20% lighter version of the original color is
#615BFF, and Hex
#0000A2 is the 20% darker color. If the color is saturated by 10%, you get
#2922E0. If the color is desaturated by 10%, the color
#332ECA is obtained.