The hex color #ffdd4f is a light color. The web-safe version is Hex
#FFCC66. A complementary color is
#0022B0. The grayscale version is
#B9B9B9. A 20% lighter version of the original color is
#FFFF82, and Hex
#CCAA1C is the 20% darker color. If the color is saturated by 10%, you get
#FFE144. If the color is desaturated by 10%, the color
#F8D95A is obtained.