Use only 6-character colors (like #RRGGBB)

Text Color
Background Color
Your chosen colors:
This is a sample This is a sample This is a sample
With this background,
white text is more suitable black text is less suitable
black text is more suitable white text is less suitable
Similar colors meeting W3C AA standard (4.5:1)
This is a sample This is a sample This is a sample
Similar colors meeting W3C AAA standard (7:1)
This is a sample This is a sample This is a sample

Analysis: 

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Pallette variations