The hex color #5d80a1 is a dark color. The web-safe version is Hex
#669999. A complementary color is
#A27F5E. The grayscale version is
#7F7F7F. A 20% lighter version of the original color is
#90B3D4, and Hex
#2A4D6E is the 20% darker color. If the color is saturated by 10%, you get
#5A80A4. If the color is desaturated by 10%, the color
#60809E is obtained.