The hex color #2d33e1 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#D2CC1E. The grayscale version is
#6B6B6B. A 20% lighter version of the original color is
#6066FF, and Hex
#0000AE is the 20% darker color. If the color is saturated by 10%, you get
#272DED. If the color is desaturated by 10%, the color
#3339D5 is obtained.