The hex color #1f55f4 is a dark color. The web-safe version is Hex
#3366FF. A complementary color is
#E0AA0B. The grayscale version is
#787878. A 20% lighter version of the original color is
#5288FF, and Hex
#0022C1 is the 20% darker color. If the color is saturated by 10%, you get
#1652FF. If the color is desaturated by 10%, the color
#2859E8 is obtained.