The hex color #0003ef is a dark color. The web-safe version is Hex
#0000FF. A complementary color is
#FFFC10. The grayscale version is
#515151. A 20% lighter version of the original color is
#3336FF, and Hex
#0000BC is the 20% darker color. If the color is saturated by 10%, you get
#0000FF. If the color is desaturated by 10%, the color
#080BDF is obtained.