The hex color #1f6de9 is a dark color. The web-safe version is Hex
#3366FF. A complementary color is
#E09216. The grayscale version is
#7C7C7C. A 20% lighter version of the original color is
#52A0FF, and Hex
#003AB6 is the 20% darker color. If the color is saturated by 10%, you get
#166BF4. If the color is desaturated by 10%, the color
#286FDE is obtained.