The hex color #227d9c is a dark color. The web-safe version is Hex
#336699. A complementary color is
#DD8263. The grayscale version is
#696969. A 20% lighter version of the original color is
#55B0CF, and Hex
#004A69 is the 20% darker color. If the color is saturated by 10%, you get
#1B7FA1. If the color is desaturated by 10%, the color
#297B97 is obtained.