The hex color #3a536c is a dark color. The web-safe version is Hex
#336666. A complementary color is
#C5AC93. The grayscale version is
#535353. A 20% lighter version of the original color is
#6D869F, and Hex
#072039 is the 20% darker color. If the color is saturated by 10%, you get
#38536F. If the color is desaturated by 10%, the color
#3D536A is obtained.