The hex color #2c78d4 is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#D3872B. The grayscale version is
#7D7D7D. A 20% lighter version of the original color is
#5FABFF, and Hex
#0045A1 is the 20% darker color. If the color is saturated by 10%, you get
#2477DD. If the color is desaturated by 10%, the color
#3479CB is obtained.