The hex color #3d35c0 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#C2CA3F. The grayscale version is
#666666. A 20% lighter version of the original color is
#7068F3, and Hex
#0A028D is the 20% darker color. If the color is saturated by 10%, you get
#3930C9. If the color is desaturated by 10%, the color
#413AB7 is obtained.