The hex color #0003f5 is a dark color. The web-safe version is Hex
#0000FF. A complementary color is
#FFFC0A. The grayscale version is
#535353. A 20% lighter version of the original color is
#3336FF, and Hex
#0000C2 is the 20% darker color. If the color is saturated by 10%, you get
#0000FF. If the color is desaturated by 10%, the color
#080BE5 is obtained.