The hex color #3A04DB is a dark color. The web-safe version is Hex
#3300CC. A complementary color is
#C5FB24. The grayscale version is
#5E5E5E. A 20% lighter version of the original color is
#6D37FF, and Hex
#0700A8 is the 20% darker color. If the color is saturated by 10%, you get
#3600E8. If the color is desaturated by 10%, the color
#3E0DCE is obtained.