Reliably converting material color between Color and Color32

I'm doing image analysis on my rendered images. Here's my problem. After assigning a color to my material, the color's RGB value in the framebuffer and the one returned by unity via Color32 is different and it's been driving me insane. It's most probably caused by float to int conversion but I couldn't find a way to make them align.

Code (csharp):

1. //pseudo code
2. Color NewColor = new Color(0.123f,0.43f,0.37f,1f);
3. gameObject.GetComponent<Renderer>().material.color = NewColor;
4. Color32 NewColorRGB = NewColor;
5. NewColorRGB.r //returns 31 when framebuffer is 32
6. NewColorRGB.g //returns 109 when framebuffer is 110
7. NewColorRGB.b //returns 94 which is correct

 

OK, I think I found the solution. Initial tests seem OK. Do this for each color channel.

Code (csharp):

1. NewColorRGB_R = (int)Math.Round(InColor.r * 255.0f, MidpointRounding.AwayFromZero);

 

Unfortunately, this is not working for all cases. Any suggestions.

 

It won't work for all situations perfectly because you're using floats. How do you know that 255.0 can be exactly represented and not as 244.999939 or something?

Also beware of any effects from linear/gamma color.