The hex color #227b7c is a dark color. The web-safe version is Hex
#336666. A complementary color is
#DD8483. The grayscale version is
#5E5E5E. A 20% lighter version of the original color is
#55AEAF, and Hex
#004849 is the 20% darker color. If the color is saturated by 10%, you get
#1C7E7F. If the color is desaturated by 10%, the color
#287879 is obtained.