Farrow & Ball · No. 237 · Blues
Farrow & Ball
Cook's Blue
Benjamin Moore
Blue Dragon
Lower score means closer. Under 2 is hard to tell apart on the wall; over 5 is a different colour that sits in the same family.
British paint maker, widely stocked across the UK.
UK stockists
Closest · 206
Tivoli
Nearest availablescore 5.40
This brand has nothing closer. Treat it as a starting point only.
Option 2 · 104
Blue Verditer
Nearest availablescore 7.21
Option 3 · 108
James
Nearest availablescore 8.81
Sold through independent stockists in the UK and mixed to order.
UK stockists
Closest · 810
Blue Dragon
Very closescore 1.66
A small difference you may see with the two side by side.
Option 2 · CC-876
Mariner's Tale
Very closescore 1.66
Option 3 · 803
Lazy Sunday
Closescore 2.29
North American colour card.
Closest · SW 6529
Scanda
Closescore 2.33
Same family and depth. Expect a slight shift in warmth or strength.
Option 2 · SW 6809
Lobelia
Closescore 2.96
Option 3 · SW 9065
Perfect Periwinkle
Closescore 3.46
North American colour card. The Valspar range sold in UK stores is different.
Closest · 4004-6A
Splendid Blue
Closescore 2.79
Same family and depth. Expect a slight shift in warmth or strength.
Option 2 · 4006-8B
Mountain Lake
Similarscore 3.57
Option 3 · 4006-10B
Someday
Similarscore 4.08
North American colour card.
Closest · 1161-4
Blue Promise
Similarscore 3.93
A sensible alternative, but clearly its own colour beside the original.
Option 2 · 1159-4
Walden Pond
Similarscore 4.55
Option 3 · 1244-5
Blueberry Popover
Similarscore 4.56
North American colour card.
Closest · 580F-5
Mysteria
Very closescore 1.73
A small difference you may see with the two side by side.
Option 2 · S530-5
Brisk Blue
Closescore 2.93
Option 3 · S520-5
Thundercloud
Closescore 3.20
North American colour card.
Closest · DE5879
Ocean City
Closescore 3.26
Same family and depth. Expect a slight shift in warmth or strength.
Option 2 · DE5885
Denim Tradition
Similarscore 4.58
Option 3 · DE5851
Blueberry Muffin
Similarscore 4.61
From the trade
Paint Cook's Blue and your chosen match on two boards in the same finish. A flat and an eggshell in one colour never look identical.
Check them on the darkest wall in the morning and again under your own lamps at night. That is where small differences show.
Give the merchant the brand, colour name and code shown here. It avoids the guesswork of a scanned match.
In your light
Pick the way your window faces and the time of day. The same paint can look like three different colours.
North light is steady but cool and grey. It pulls blues and greys colder and makes greens look heavier. Warm based colours hold up best.
An approximation of how light colour and strength shift a paint. Use it to narrow a shortlist, then paint a sample board and look at it at these same times.
Building a scheme
Worked out from undertone and depth, the way a decorator would put a scheme together. Paint samples side by side before you commit.
A pale colour from the same undertone as Cook's Blue, so the ceiling does not look stark white against it.
One step lighter or darker on skirtings, doors and window boards. A tonal scheme is the easiest way to make a room feel finished.
A dark colour that sits under it. Use on a fireplace wall, an inside door, a kitchen island or a hall below the dado.
From the other side of the colour wheel, at a similar depth, for a door, a bookcase or a cushion. Use in small amounts.
Colour values are on screen approximations taken from published community colour libraries (Farrow & Ball; Farrow & Ball (cross check); Little Greene; Benjamin Moore; Sherwin-Williams, Valspar, PPG, Behr, Dunn-Edwards), compiled 2026-10-09. Scores use CIEDE2000. Screens, light and sheen all change how paint looks, so always check a physical sample. Aethos is not connected to any of the paint makers named here and all colour names belong to their owners.