The hex color #1a78f5 is a dark color. The web-safe version is Hex
#3366FF. A complementary color is
#E5870A. The grayscale version is
#828282. A 20% lighter version of the original color is
#4DABFF, and Hex
#0045C2 is the 20% darker color. If the color is saturated by 10%, you get
#1077FF. If the color is desaturated by 10%, the color
#2479EA is obtained.