The hex color #2e28ff is a dark color. The web-safe version is Hex
#3333FF. A complementary color is
#D1D700. The grayscale version is
#727272. A 20% lighter version of the original color is
#615BFF, and Hex
#0000CC is the 20% darker color. If the color is saturated by 10%, you get
#2721FF. If the color is desaturated by 10%, the color
#352FF1 is obtained.