The hex color #2f3af3 is a dark color. The web-safe version is Hex
#3333FF. A complementary color is
#D0C50C. The grayscale version is
#747474. A 20% lighter version of the original color is
#626DFF, and Hex
#0007C0 is the 20% darker color. If the color is saturated by 10%, you get
#2834FF. If the color is desaturated by 10%, the color
#3640E6 is obtained.