The hex color #35818c is a dark color. The web-safe version is Hex
#339999. A complementary color is
#CA7E73. The grayscale version is
#6B6B6B. A 20% lighter version of the original color is
#68B4BF, and Hex
#024E59 is the 20% darker color. If the color is saturated by 10%, you get
#30838F. If the color is desaturated by 10%, the color
#3A7F89 is obtained.