Castle Gray is a light grey from Farrow & Ball. As a premium paint, it’s a popular colour to look for a closer or cheaper alternative to.
Here are the nearest matches from every other UK brand in the PaintDial library, ranked by how close each one is.
The nearest Dulux colour is Storm Day (very close). It won’t be pixel-perfect, so order a tester before committing.
Of the close matches, Birch Forest by Johnstone's is the best-value option (value, very close).
Each is the nearest colour that brand makes, by perceptual colour difference. Screens differ from paint on a wall, so treat these as a shortlist and always order tester pots.
Search any paint name in the tool to see its closest matches across every UK brand.
See the full Castle Gray colour page →