I have a spec that specifies certain RGB colors for my images. I see in my color swatch that I can type in the RGB #'s, such as
Aqua = R = 80, G = 239 & G = 255
When entering these values, one of the RGB's shows an explanation symbol in a triangle. What does this mean? It appears that if I have this symol, then my desired RGB can't be fully created.
How can I avoid this type of error or get my desired RGB's to fully work?
The caution symbol is meant to alert you that the colour is out of gamut when converted to CMYK. Since you are working exclusively in RGB I assume this is not for press, so it is probably not a concern. When working with RGB in Illustrator it is vital to ensure Document Color Mode (File Menu) is also RGB.
I have a spec that specifies certain RGB colors for my images.
I hope the spec also includes the color space in which you are to be working (e.g., sRGB, Adobe RGB...). Without that crucial piece of information, the RGB "numbers" are meaningless.