The hex color #3d80c2 is a dark color. The web-safe version is Hex
#3399CC. A complementary color is
#C27F3D. The grayscale version is
#808080. A 20% lighter version of the original color is
#70B3F5, and Hex
#0A4D8F is the 20% darker color. If the color is saturated by 10%, you get
#3680C9. If the color is desaturated by 10%, the color
#4480BB is obtained.