The hex color #3670ad is a dark color. The web-safe version is Hex
#336699. A complementary color is
#C98F52. The grayscale version is
#717171. A 20% lighter version of the original color is
#69A3E0, and Hex
#033D7A is the 20% darker color. If the color is saturated by 10%, you get
#3070B3. If the color is desaturated by 10%, the color
#3C70A7 is obtained.