Which RGB values or others make color that is visible only under ultraviolet ray on the white paper?
Making a color that is visible only under UV radiation is not a matter of RGB values, it is a matter of selecting a material that is fluorescent when illuminated with UV, but matches the background under normal visible light. In that case, the RGB values would be the same as the background, but you would only use the fluorescent material for the parts you wanted to be visible under UV.
