When you export an image file, set the color profile to sRGB on the export dialog. So, all you can do is set a generic universal color profile in the image file and hope that your viewers will use a color aware application that will read the color profile and use it to attempt to display colors in the hues that you intended. Now, while you can control color in your computer environment, you have no control over what color looks like on my monitor or any friends monitor. If you do not have a piece of hardware to calibrate your monitor, you can use a display app in system preferences to adjust the color profile of your monitor to a generic perception of how you see color. It works well for me and will actively manage multiple monitors. There are several color calibration tools available to accurately tune your monitor and actively manage color as room conditions change with the champ going light. Also anyone viewing your images outside of LR (and this includes you), needs to use a color managed application to view the image. Everyone else that views your images needs to have a monitor that is tuned to show true colors and not shifted colors. So, for your LR processed images to look as good as they do in your LR, you need to have your monitor tuned. Chrome (the browser that I use on OSX), is not color managed. Most OSX image viewing applications and Safari are color aware. This is especially true of Windows image viewing applications. Other applications like your browser may not be.

More importantly, the application that reads the number that represents true red, needs to send the number to the monitor that represents true red, so that it will display a color that appears to you what you perceive as true red. And similarly, this is use for all of the other colors in the color space. The monitor must be tuned so that the number that represents true 'red' displays what appears to you as 'red'. LR is a ColorSpace/Color profile aware application.

Macbook color calibration