I think you need to buy at least 3 sample sized or small cans and paint them on the wall. It is amazing how the undertones come out, blue, pink, yellow etc. depending on the light in your house and surrounding decor like drapes or brickwork. I totally changed my mind about a taupe -y grey color when I put it on the wall.

Every greyed colour available on the high street belongs to an identifiable Hue Family. SW Web Gray belongs to the Blue Hue Family.

Depending upon the quality of available light it may appear more greyed, or more noticeably blue.

Grizzle belongs to the Green Hue Family. It too may appear just grey, or you may get flashes of its Green Hue Parent DNA. Also near neutrals from this region can shift and look more blue also. These aren’t inherently blue. If they shift and appear so it’s due to light quality & context.

Choosing a grey which has some connection to other key fixtures or fittings is another way to go. See lots of greys in their Hue Families at The Land of Color .com

Farrow & Ball Railings is a great charcoal grey from the Purpke-Blue Hue Family which is complementary to the Yellow of the concrete.

I did visit this website but couldnt find how to add a color , i will try again. thank you dri the thoughtful answer.

I totally see the blue. But I think that’s the beauty in it. I LOVE THIS COLOR.
and if it were me I’d keep it. Looks really nice.
And would look beautiful with cream colors, and Browns.

Hi you can’t add a colour but you can look colours up in the free colorography lab or pay for a month access to the larger Colour DNA files. It certainly beats second guessing colour attributes. Wishing you good colour fortune! 🌈

IMO you never test colors on the wall Get large poster boards paint each one with 2 coats of the 3 samples you like move those boards around at all times of the day and IMO all lighting LED 4000K will make this a simpler job.I think all this info you can look up never is as good as testing the colors in your home.

Update - I did Kendall Charcoal by Benjamin Moore and it is just what I wanted. Thank you for the help!