The hex color #3d17f0 is a dark color. The web-safe version is Hex
#3300FF. A complementary color is
#C2E80F. The grayscale version is
#6C6C6C. A 20% lighter version of the original color is
#704AFF, and Hex
#0A00BD is the 20% darker color. If the color is saturated by 10%, you get
#380FFD. If the color is desaturated by 10%, the color
#4220E3 is obtained.