The hex color #1b87d5 is a dark color. The web-safe version is Hex
#3399CC. A complementary color is
#E4782A. The grayscale version is
#7D7D7D. A 20% lighter version of the original color is
#4EBAFF, and Hex
#0054A2 is the 20% darker color. If the color is saturated by 10%, you get
#1188DE. If the color is desaturated by 10%, the color
#2586CC is obtained.