The hex color #25779c is a dark color. The web-safe version is Hex
#336699. A complementary color is
#DA8863. The grayscale version is
#686868. A 20% lighter version of the original color is
#58AACF, and Hex
#004469 is the 20% darker color. If the color is saturated by 10%, you get
#1E79A1. If the color is desaturated by 10%, the color
#2C7697 is obtained.