The hex color #4028b7 is a dark color. The web-safe version is Hex
#3333CC. A complementary color is
#BFD748. The grayscale version is
#606060. A 20% lighter version of the original color is
#735BEA, and Hex
#0D0084 is the 20% darker color. If the color is saturated by 10%, you get
#3D22C0. If the color is desaturated by 10%, the color
#432EAE is obtained.