The hex color #1b72dd is a dark color. The web-safe version is Hex
#3366CC. A complementary color is
#E48D22. The grayscale version is
#797979. A 20% lighter version of the original color is
#4EA5FF, and Hex
#003FAA is the 20% darker color. If the color is saturated by 10%, you get
#1271E7. If the color is desaturated by 10%, the color
#2473D3 is obtained.