You need to get a sample of CW623 Brush-Everard Blue. Williamsburg Color Collection from Pratt & Lambert. SW store should be able to mix a Color To Go jug. The harmony with Nantucket Gray is divine. Odd color name, little-known color collection but you won't find a similar blue anywhere else. Hale Navy is the wrong blue on many levels of contrast, you are right that it is too blue.

Here in Virginia, as you might imagine, the Williamsburg paints are everywhere, and easy to find.
You can see the Williamsburg colors at this link.
Click on the Color Visualizer tab, and then click on "All colors" under Williamsburg on the list on the right.

There's also a store locator.
If there isn't one near you, you can probably get them to send you a brochure of these colors.

Here is a link that might be useful: P&L Williamsburg color collection

Thank you! I will follow-up on CW623. The Hale Navy makes me cringe every time I look at it.

Thanks again!

TY for the link, bronwynsmom. Pratt & Lambert has shrunk so much in the marketplace I automatically assume it's not accessible.

You'd think I'd learn by now to not make that kind of assumption! One of these days I'll catch on. ;)