The hex color #2f74b0 is a dark color. The web-safe version is Hex
#336699. A complementary color is
#D08B4F. The grayscale version is
#717171. A 20% lighter version of the original color is
#62A7E3, and Hex
#00417D is the 20% darker color. If the color is saturated by 10%, you get
#2874B6. If the color is desaturated by 10%, the color
#3674AA is obtained.