The hex color #5b998c is a light color. The web-safe version is Hex
#669999. A complementary color is
#A46673. The grayscale version is
#808080. A 20% lighter version of the original color is
#8ECCBF, and Hex
#286659 is the 20% darker color. If the color is saturated by 10%, you get
#579C8D. If the color is desaturated by 10%, the color
#5F978B is obtained.