The hex color #5E9199 is a light color. The web-safe version is Hex
#669999. A complementary color is
#A16E66. The grayscale version is
#838383. A 20% lighter version of the original color is
#91C4CC, and Hex
#2B5E66 is the 20% darker color. If the color is saturated by 10%, you get
#5A929B. If the color is desaturated by 10%, the color
#629097 is obtained.