The hex color #3a58ec is a dark color. The web-safe version is Hex
#3366FF. A complementary color is
#C5A713. The grayscale version is
#7F7F7F. A 20% lighter version of the original color is
#6D8BFF, and Hex
#0725B9 is the 20% darker color. If the color is saturated by 10%, you get
#3354F7. If the color is desaturated by 10%, the color
#415CE1 is obtained.