The hex color #2f33ef is a dark color. The web-safe version is Hex
#3333FF. A complementary color is
#D0CC10. The grayscale version is
#707070. A 20% lighter version of the original color is
#6266FF, and Hex
#0000BC is the 20% darker color. If the color is saturated by 10%, you get
#282DFC. If the color is desaturated by 10%, the color
#3639E2 is obtained.