The hex color #3a8da3 is a dark color. The web-safe version is Hex
#339999. A complementary color is
#C5725C. The grayscale version is
#797979. A 20% lighter version of the original color is
#6DC0D6, and Hex
#075A70 is the 20% darker color. If the color is saturated by 10%, you get
#348FA7. If the color is desaturated by 10%, the color
#408B9F is obtained.