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 #FFFF18 is the color #1818FF

The HSL model was used to determine the complementary color

Input Color


HEX #FFFF18
RGB 255, 255, 24
CMYK 0%, 0%, 91%, 0%
HSL 60°, 100%, 54.71%

Complementary Color


HEX #1818FF
RGB 24, 24, 255
CMYK 91%, 91%, 0%, 0%
HSL 240°, 100%, 54.71%

Complementary color scheme

#1818FF
#FF18FF
#FF1818
#FFFF18
#18FF18