The hex color #1d77d7 is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#E28828. The grayscale version is
#797979. A 20% lighter version of the original color is
#50AAFF, and Hex
#0044A4 is the 20% darker color. If the color is saturated by 10%, you get
#1477E0. If the color is desaturated by 10%, the color
#2677CE is obtained.