The hex color #3d03cd is a dark color. The web-safe version is Hex
#3300CC. A complementary color is
#C2FC32. The grayscale version is
#5A5A5A. A 20% lighter version of the original color is
#7036FF, and Hex
#0A009A is the 20% darker color. If the color is saturated by 10%, you get
#3A00D9. If the color is desaturated by 10%, the color
#400CC1 is obtained.