The hex color #155ed1 is a dark color. The web-safe version is Hex
#0066CC. A complementary color is
#EAA12E. The grayscale version is
#6C6C6C. A 20% lighter version of the original color is
#4891FF, and Hex
#002B9E is the 20% darker color. If the color is saturated by 10%, you get
#0C5DDB. If the color is desaturated by 10%, the color
#1E5FC7 is obtained.