The hex color #64a6a8 is a light color. The web-safe version is Hex
#669999. A complementary color is
#9B5957. The grayscale version is
#919191. A 20% lighter version of the original color is
#97D9DB, and Hex
#317375 is the 20% darker color. If the color is saturated by 10%, you get
#60A8AA. If the color is desaturated by 10%, the color
#68A4A6 is obtained.