The hex color #3471e8 is a dark color. The web-safe version is Hex
#3366FF. A complementary color is
#CB8E17. The grayscale version is
#848484. A 20% lighter version of the original color is
#67A4FF, and Hex
#013EB5 is the 20% darker color. If the color is saturated by 10%, you get
#2C6FF2. If the color is desaturated by 10%, the color
#3C73DE is obtained.