The hex color #1c55b3 is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#E3AA4C. The grayscale version is
#616161. A 20% lighter version of the original color is
#4F88E6, and Hex
#002280 is the 20% darker color. If the color is saturated by 10%, you get
#1554BB. If the color is desaturated by 10%, the color
#2356AB is obtained.