The hex color #2d77d6 is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#D28829. The grayscale version is
#7E7E7E. A 20% lighter version of the original color is
#60AAFF, and Hex
#0044A3 is the 20% darker color. If the color is saturated by 10%, you get
#2576DF. If the color is desaturated by 10%, the color
#3578CD is obtained.