The hex color #173fdd is a dark color. The web-safe version is Hex
#0033CC. A complementary color is
#E8C022. The grayscale version is
#666666. A 20% lighter version of the original color is
#4A72FF, and Hex
#000CAA is the 20% darker color. If the color is saturated by 10%, you get
#0F3BE9. If the color is desaturated by 10%, the color
#1F43D1 is obtained.