The code originally appeared on but is no longer available there (404) so I’ve posted it here.
If you were to create the color in code, you would use + for values in the Generic RGB color space or + for values in the sRGB color space.Below is a Color Picker / Color Chooser Applescript for Mac OS X. Or sample from an image file with an embedded color profile as displayed by an app which properly handles that (Preview will do), and then convert to a specific color profile. Once you've confirmed that, you need to switch the color picker to the desired color profile before entering values. Move it to one side so that it's out of your way: click the title bar of the dialog box and then drag. Click the Color button, and then click More Colors at the bottom.
Apple’s own iWork and iLife® suites, Google Sketchup, Adobe® Photoshop®, and renowned applications like Coda, CSSEdit, and many more, all work well with Mondrianum. The Format Background pane opens on the right. Once installed, Mondrianum acts like a built-in, system-wide color picker, available in any Mac application that supports this feature of Mac OS X. You can open Display Calibrator from System Preferences > Displays > Color > Calibrate.) On the Format menu, select Slide Background. (You both should also calibrate your display's color profile using Display Calibrator or dedicated hardware. However, the app will only allow one custom tint. Also, if they are giving you image files to work from, those need to have an embedded color profile so that you can be sure they display (nearly) the same on your screen as they do on theirs. The app comes with four default tint colors, but users can add their own tint by using the built-in color picker tool. So you need to change your 5GHz SSID to a unique name or you need to go back to OS X 10.5, or you can change the 2.4GHz channel from within the router.
There is no known API for this and no third party Software exists that can do this. If they aren't color-profile-savvy, they may have expressed them in their personal screen's device profile, which is basically useless. On OS X 10.6 and beyond it is no longer possible to connect to BSSID directly. You need to check with your designer to find out what color profile they are expressing the colors in.
For what it's worth, your last screenshot as shown on my screen and sampled with the eyedropper shows that the outer color is nearly 217,114,62 in the Generic RGB color profile while the inner color is nearly 217,114,62 in the sRGB color profile. Instead, it reinterprets them in the new profile. I suspect that clicking in the hex field switches the color profile to sRGB because that's the color profile of web colors but, on the theory that you want to use the sliders and text fields to specify a color in that profile, it doesn't convert the current values. One of my favourites is the ability to sample colours from images.
The gear icon next to the pop-up menu showing "RGB" in your screenshots both shows you the color profile for the values shown by the sliders and text fields and lets you change the profile (thus converting the values). macOS’s Color Picker panel has been around for an eternity and is jam packed full of great features. This will be different from a calibrated color profile like sRGB or generic. When you use the eyedropper in the color picker to sample a color from the screen, you get the values in the device color profile. You would need to know in which color profile that was expressed. Is it weird stuff Also, there's a different picker tool for getting multiple random items from your list if that's what you're after.
I wonder what type of things you're entering in the list. "RGB 217,114,62" does not adequately specify a color. Just enter your list items and the tool will be the chooser / picker / selector you've been yearning for. This change makes Chrome on macOS feel much better integrated into the platform and fixes. Starting in Chrome 59, notifications sent via the Notifications API or the chrome.notifications extensions API will be shown directly by the macOS native notification system instead of Chromes own system. You (and possibly your designer) need to familiarize yourself with color profiles. Moving to the Native Notification System on macOS.