The hex color #EFF4D0 is a light color. The web-safe version is Hex
#FFFFCC. A complementary color is
#100B2F. The grayscale version is
#E6E6E6. A 20% lighter version of the original color is
#FFFFFF, and Hex
#BCC19D is the 20% darker color. If the color is saturated by 10%, you get
#F0F5CE. If the color is desaturated by 10%, the color
#EEF3D2 is obtained.