The hex color #2f33d5 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#D0CC2A. The grayscale version is
#686868. A 20% lighter version of the original color is
#6266FF, and Hex
#0000A2 is the 20% darker color. If the color is saturated by 10%, you get
#292EE0. If the color is desaturated by 10%, the color
#3538CA is obtained.