Cook's Blue
No. 237 · #6A8FB2 · LRV 26 — cool blue tone, mid-tone — versatile but shifts visibly with light.
- 1Hale Navy8
- 2Waterloo13
- 3Cook's Blue26
- 4Resolute Blue40
- 5Lost in the 80s51
What Color Is Cook's Blue, Really?
Cook's Blue reads as a cool blue tone — mid-tone — versatile but shifts visibly with light. The notes below cover how Farrow & Ball No. 237 behaves in different light and the closest matches at competing US brands.
Best Rooms and Uses for Cook's Blue
Cook's Blue is versatile enough for full rooms but has enough depth to anchor a space, so it suits living rooms, bedrooms and cabinetry alike. Blues calm a room, which makes them popular in bedrooms, bathrooms and home offices.
How Lighting Changes Cook's Blue
Cook's Blue sits in the mid-range at LRV 26, so it shifts visibly through the day — lighter and more open in morning light, deeper and moodier after dark. Its blue undertone is the part to watch: it gets picked up by whatever sits next to it, so test it against your trim, floor and the room's main light before committing. South-facing rooms will pull it lighter and warmer, while north light cools it down.
Most complaints about Cook's Blue are a light mismatch. Upload a photo of your actual room and see it on your walls — then ask for the same wall in north light or evening lamps before you buy a single sample.
Need It From Another Brand?
Any paint counter can custom-tint Farrow & Ball No. 237 directly. If you would rather stay in one brand's own deck, these are the closest stock matches, measured as ΔE2000. Under 2 is a difference you will not see on the wall.
| Brand | Closest color | ΔE | LRV | |
|---|---|---|---|---|
| Sherwin-Williams | ScandaSW 6529 · Sherwin-Williams | 1.9 | 25 | Color page → |
| Behr | Mysteria580F-5 · Behr | 1.8 | 26 | Color page → |
| Benjamin Moore | Blue Dragon810 · Benjamin Moore | 1.5 | 28 | Color page → |
| Valspar | Splendid Blue4004-6A · Valspar | 2.2 | 25.9 | Color page → |
| Glidden | Centurion Blue30BB 27/209 · Glidden | 4.2 | 27 | Color page → |
| Dutch Boy | Blue Jay Blue239-5DB · Dutch Boy | 1.9 | 25 | Color page → |
Similar Farrow & Ball Colors
The nearest shades to Cook's Blue within Farrow & Ball's own range, ranked by perceptual color distance — useful when you want the same look a touch lighter, darker, or warmer.
WCAG 2.1: AA is 4.5 : 1 for normal text, 3 : 1 for large text, AAA is 7 : 1.
Coordinated palette
Generated by hue-rotating #6A8FB2 in HSL space. Pair Cook's Blue with one accent and one neutral — the swatches below are starting points, not final picks.
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