Trying to match a BS colour with a RAL colour...

[Crofter]

My steel roofing is supposed to be BS18B29 or 'slate blue'.

I'd like to match this for some replacement windows, but that will mean finding the nearest RAL code.

Just on the off chance, if anybody on here has their hands on charts for both systems, what would the closest match be?

[dpmiller]

https://apc-gb.com/wp-content/uploads/2018/07/BS5252-Ral-Cross-Reference.pdf

 

7021?

[Bonner]

Other way round, I have windows in RAL7015 Slate Grey and was looking for matching profiles etc. Found BS18B29 a close match but depends on product, surface finish and manufacturer.

[Nick Laslett]

I find these websites are quite good for colour matching.

 

https://www.colorxs.com/color/bs-18-b-29-blue

 

https://www.e-paint.co.uk/colour-alternatives.asp?cRange=BS+4800/5252&cRef=18+B+29&cDescription=Raven

 

 

[Crofter]

1 hour ago, dpmiller said:

https://apc-gb.com/wp-content/uploads/2018/07/BS5252-Ral-Cross-Reference.pdf

 

7021?

I'm thinking more like 5001. There's definitely a slight blue tint to it.

 

It's funny, the roofing people call it BS1829 but every other reference I can find to that shows it as a solid grey without any blue to it.

 

Aargh. I might just have to fork out for a RAL colour chart and wait for it to turn up.

[garrymartin]

Do you have a spare piece of the roofing? Take it to a decent paint shop that does colour matching. They will probably have the RAL charts available.

[Crofter]

6 minutes ago, garrymartin said:

Do you have a spare piece of the roofing? Take it to a decent paint shop that does colour matching. They will probably have the RAL charts available.

I likely have a few spare caps for the screws, colour should be close enough.

[garrymartin]

Take a look at this... https://www.e-paint.co.uk/colour-alternatives.asp?cRange=BS+4800/5252&cRef=18+B+29&cDescription=Raven

 

RAL 7024 seems to be the closest Classic RAL match, but note it only has two stars, which means "close, but distinguishable". I have the RAL K7 Classic fandeck and RAL 7024 only seems to have a very slight blue tinge to my eye. As @Bonner notes, 7015 might also be a match for you, depending on your finish. It's slightly lighter than 7024 but still has that slight blue tinge.