The hex color #3d65fa is a dark color. The web-safe version is Hex
#3366FF. A complementary color is
#C29A05. The grayscale version is
#898989. A 20% lighter version of the original color is
#7098FF, and Hex
#0A32C7 is the 20% darker color. If the color is saturated by 10%, you get
#3561FF. If the color is desaturated by 10%, the color
#4569EF is obtained.