The hex color #2783a7 is a dark color. The web-safe version is Hex
#339999. A complementary color is
#D87C58. The grayscale version is
#707070. A 20% lighter version of the original color is
#5AB6DA, and Hex
#005074 is the 20% darker color. If the color is saturated by 10%, you get
#2085AC. If the color is desaturated by 10%, the color
#2E81A2 is obtained.