The hex color #ea1a1f is a dark color. The web-safe version is Hex
#FF3333. A complementary color is
#15E5E0. The grayscale version is
#616161. A 20% lighter version of the original color is
#FF4D52, and Hex
#B70000 is the 20% darker color. If the color is saturated by 10%, you get
#F81318. If the color is desaturated by 10%, the color
#DC2126 is obtained.