How to determine complementary colors?
What are the different color models?

Determine Complementary Color

140 color names
216 web safe colors
2040 RAL colors
200 shades of gray

The complementary color of #FF1818 is the color #18FFFF

The HSL model was used to determine the complementary color

Input Color


HEX #FF1818
RGB 255, 24, 24
CMYK 0%, 91%, 91%, 0%
HSL 0°, 100%, 54.71%

Complementary Color


HEX #18FFFF
RGB 24, 255, 255
CMYK 91%, 0%, 0%, 0%
HSL 180°, 100%, 54.71%

Complementary color scheme

#18FFFF
#1818FF
#FF18FF
#FF1818
#FFFF18