The hex color #2f38b8 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#D0C747. The grayscale version is
#606060. A 20% lighter version of the original color is
#626BEB, and Hex
#000585 is the 20% darker color. If the color is saturated by 10%, you get
#2A34C1. If the color is desaturated by 10%, the color
#343CAF is obtained.