The hex color #3d03e4 is a dark color. The web-safe version is Hex
#3300CC. A complementary color is
#C2FC1B. The grayscale version is
#616161. A 20% lighter version of the original color is
#7036FF, and Hex
#0A00B1 is the 20% darker color. If the color is saturated by 10%, you get
#3900F1. If the color is desaturated by 10%, the color
#410CD7 is obtained.