i don't exactly what you mean by the official palette for classic sonic. he's gone through many variations of colors and i'm not quite sure which one your sprites resemble.
If it's generations classic sonic, you should still add some more contrast.
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![[Image: latest?cb=20130127222538]](http://vignette1.wikia.nocookie.net/scratchpad/images/f/f3/Classic_Sonic.png/revision/latest?cb=20130127222538)
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If it's generations classic sonic, you should still add some more contrast.
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