You can't really crowd source this, as it depends your room, your light, your exposures and all else in the room. Show your room?

Beyond that, you need to be looking at the tinted WHITES in Ben Moore. why? I guarantee you every "chip blue" will be too blue: )

begin by showing the room, and what is in there,!!

BM PAPER WHITE isn't as fresh as I'd like, to me it has a green hue.

I'd sample BM Icy Blue. the natural and artificial light will affect the look as will the furnishings in the room, even the flooring and window treatments.

Sample, sample, sample. only you can decide on what you believe to be a coastal color.

if you want white w/a hint of blue,

Or try Lily White

actual coastal blue colors

A coastal bedroom is more than paint color. it's the articles in the room that give off texture and nod to the beach.

this is one of my favorites

the wall trim work, beaded chandy, textured items, wicker bed, soft art, etc, very beachy.

same w/this one. more of a calif boho coastal look

This room is too, but more in a Hamptons type of design

w/o the bench

I wouldn't say paper white is on the blue spectrum.

it leans grayish green compared to regular whites.

compare it to stone white

I used silver half dollar in my room and it came off very cool light blue. doesn't look like it would, but it did.

a lot will depend on the room direction and what kind of light it gets. north and east facing windows will tend to look cooler

My favorite could be yours as well, but there's just as good a chance that it won't be.

Some Ben Moore colors to try: White Violet, Lookout Point, Glass Slipper, Patriotic White, Lily White, Cascade White, White Ice, White Diamond, Winter Snow. Try large samples in your room with your light (both natural and artificial), on different walls, and view at different times of the day and night. It's not easy, it takes time and there are no shortcuts.

Paper White looked a little gray when I used it in my previous house with a west facing window. It was perfect for me there as it went with the gray tile floor (laundry room). You will need a larger sample than a chip to see if it will work for you.

If you want something that looks more blue than Paper White does, you can look at swatches like Icy Blue, but you may want to have the paint store cut the tint in half to make the color more subtle. I have done that in the past with blues and greens to get the reduced intensity I was looking for. Make sure they note the exact formula that results so you are able to duplicate it for additional cans.

It really depends on your lighting how the colors will play but I have recently been using SW Mountain Air and love it.

you can see it on the ceiling here

There are so many thousands of pre-mixed colors, I don't see the need to lighten or cut a color. You never know how it will change. At least when you try a pre-mixed color you have a fairly good idea of what it's going to look like.

Paper White is not blue.

Correct--Paper White is in the green/yellow hue family. The hue angle is 121* so it's in the middle between green and yellow.

Here is an article about BM Paper White- which features some ”Coastal” style rooms, done in this wall paint color. So, if this is the look you are going for, and if the color works in your actual space with your lighting, etc. - then go for it.

https://stefanasilber.com/benjamin-moore-paper-white/

Farrow & Ball Skylight and Borrowed Light.

I find blues tricky to get right so seeing your room and the bedding are important. I find pale blues often look like a nursery space and for sure do not think you need blue to denote coastal at all.

I find "coastal" confusing.

I see all these light blues and greens. Where do these colors actually exist? If I go outside at Key West, I see: plants that are deep green, sky of rather deep blue, rather deep greens/blues of waters.

My older granddaughter has been bugging me to paint one of our bedrooms or our powder room in a light blue. I told her nope. She asked why and I told her I had a light blue bedroom as a kid. Told her I don't want to see that again.

Actually, coastal is more than confusing. Sometimes I think, if I see/hear that word again, I'm just gonna have a good old petulant frenzy.

To those of you who love it, I am sorry.

Many people have in their mind what is basically a cliche ”Coastal” design model- with the sands, light blues, seafoam green, ‘maybe’ a bit of coral thrown in. It works for many people. And that is fine. But you are right, “Coastal” is not just one thing.

For example: Around these parts (on this board) many people fervently believe, and espouse, that one cannot use black in Coastal design; which is ironic, given that- in this World- there are black sand beaches. Plus, of course black is used in Coastal design all the time. A quick Google search will verify that.

The list goes on and on- in terms of what many people think Coastal design is or is not. So as with many things, it’s all about perception.

Speaking of black in Coastal design- here is one example. From my birthplace.

https://mymanicuredlife.com/2017/03/an-australian-black-and-white-coastal-home/

Just to add: People have a right to like what they like. Whatever form of Coastal design and/or light blue walls, etc., etc. I have no problem with light blue walls, personally. In this case, though, I don’t know if the OP was even looking for light blue wall colors. It’s unclear. And OP has yet to clarify.

Benjamin Moore's Marilyn's Dress

I second Marilyn's Dress, but I have also used Ben Moore Lily White many times and I always love it. It's very, very light blue.

Thank you for all your responses.

I think I gave the wrong impression when I said coastal. I love soothing coastal colors. I guess I'm thinking more calm, sophisticated, and a silent strength look ... if that makes sense.

Headboard is Northwest. The window to the right is Southwest. This bedroom also has a fireplace facing southeast with glass tile in silver/pewter and touch of black. The fireplace is two-way from bedroom to bathroom, as is the TV (which i'm stuck with). The southeast bathroom is very large with all white/grey marble and silver tile.

I had Paper White in my last house and loved how the color bounced and changed depending on the time of day.

I like the Lily White and some of the other suggestions. I'm going to go through Diana Bier's list. I'm trying to stay away from green undertones because I do think, as much as I don't like grey, my undertones may have to go in that direction.

Thank you so much. What a great community of people!

“a silent strength look”

^^That does not really clarify...

Pictures of the space, and your existing and/or intended furniture, may be more helpful.

There are a gazillion paint colors. I still have no idea if you even really want a blue.

I used Ben Moore 1619 Silvermist, not to be confused with (Sherwin Williams Silver Mist) in our mbr. We painted in 2008 snd I still love it so much I'm just not motivated to repaint. I'll include a few pics, but although on my monito, onr looks a bit green, there is no green in this color. It's just a lovely, calm color.

What wall are your windows on? The amount of light coming in the window will affect your look more than anything. Compare the LRV of each color you like. This is the Light Reflective Value and does just what it says. A higherr LRV will reflect more light into the room than a lower number,

Found an interesting article on LRV/Chroma/Value I thought some of you may like.

https://thelandofcolor.com/lrv-light-reflectance-value-of-paint-colors/

And another article specifically on Chroma:

https://thelandofcolor.com/chroma-explained-in-plain-english-with-case-studies/

Well, you've hit on the site of the most knowledgeable color expert on Houzz, Lori Sawaya. See if you can get her to help you, even if you have to pay for an hour's worth of work. It would be worth it.

When I select paint, custom mix for a client, test on boards in my Ben Moore locale? It's not just the color I am after, it's a feel.

I admire the consultants for their knowledge, all the good buzz words, chroma, lRV and all. All the blogs you have all taken the time to read and absorb.............! Pass.

For me it is what am I SEEING against plenty of white. I have a rule. If you think you see a hint of something you don't like in any test? Guarantee it will be exponentially magnified 1000 times when it gets on four walls. I only pay attention to light quality. Is the room cool north, dim east post morning? Mostly or warm / south or whatever ...when it is single exposure.

There is almost no 'chip" I have not tweaked. As to the blue family? Only two have been used as chip formula. it is a mercurial color and what looks "light, light, light, light!! can go to BLUE!!!!!!!!!!!!!! on four walls in the time it takes you to sneeze. Oh! woe is me, not the feeling I was after, at alllllll.

Every element that goes in a room matters as well. What is the whole of the room. what is the feeling you want when you enter, what is the furniture, the rug, or the hardwood etc? What is your style? It's all much more than a paint color on the walls: ) be it any intensity.

I will never ever forget painting a bedroom for a client 33 years ago..

Why is he here with WHITE PAINT?! ...

He's not, its pale blue.

No! There's got to be some mistake, I am looking in the can as we talk! Seriously , it is WHITE!

Me....breathing

Janie, can you just call me back when he's all done, as I guarantee you WILL have a very light blue room. If not, I will pay for the do over.

Late evening, voicemail.......It's gorgeous I loooooove it. Mea Culpa Mea Culpa. lol

I agree with Jan all the stuff about chroma, etc. does not take the place of seeing the color in the space with all the other stuff in the space and your light . I too tweak colors often to make them work.