Now I understand. You’re using a newer version of Vegas and, for some insane reason, they decided to switch away from using RGB. Very few of us liked this change and made our opinions known to Sony but the problem remains 🙁
You could multiply 255 by the value you get and use those.
In your case that would be 255 – 237 – 179 but, due to rounding, this may not be identical to your original color.
I would take a screenshot, bring that into Photoshop and use the color picker to determine the color.
Good luck!!