The hex color #3c84a3 is a dark color. The web-safe version is Hex
#339999. A complementary color is
#C37B5C. The grayscale version is
#767676. A 20% lighter version of the original color is
#6FB7D6, and Hex
#095170 is the 20% darker color. If the color is saturated by 10%, you get
#3685A7. If the color is desaturated by 10%, the color
#42839F is obtained.