The hex color #155ee4 is a dark color. The web-safe version is Hex
#0066CC. A complementary color is
#EAA11B. The grayscale version is
#727272. A 20% lighter version of the original color is
#4891FF, and Hex
#002BB1 is the 20% darker color. If the color is saturated by 10%, you get
#0C5CEF. If the color is desaturated by 10%, the color
#1E60D9 is obtained.