The hex color #ecef7f is a light color. The web-safe version is Hex
#FFFF66. A complementary color is
#131080. The grayscale version is
#C9C9C9. A 20% lighter version of the original color is
#FFFFB2, and Hex
#B9BC4C is the 20% darker color. If the color is saturated by 10%, you get
#F0F378. If the color is desaturated by 10%, the color
#E8EB86 is obtained.