Color spec
| Brand | Glidden |
| Name | Diamond Blue |
| SKU | PPG1237-2 |
| Hex | #CFE4EE |
| RGB | 207, 228, 238 |
| HSL | 199°, 48%, 87% |
| LRV | 75 |
| Undertone | cool blue-green tone |
| Family | Gray |
About Glidden Diamond Blue
Diamond Blue is very light — LRV 75, close to white. It opens up small or dim rooms and keeps walls feeling airy. Its teal 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. In north light it can read slightly cooler; a warm white trim alongside keeps it from going clinical.
Diamond Blue shines on ceilings, trim and in small or low-light rooms where you need to stretch the light — and as a calm whole-home backdrop. Grays like this read as a modern neutral and sit comfortably alongside both warm woods and cool metals.
Closest matches by brand
13 brands within ΔE 5The closest matches per brand by ΔE2000, computed against each brand's full deck. Only colors within ΔE 5 (close enough to substitute on a wall) are shown — brands with no real match are left off. Tap any swatch for its full single-color spec; tap the brand title to browse all gray from that brand.
Sherwin-Williams
Behr
Benjamin Moore
Valspar
PPG / Glidden
Dutch Boy
HGTV Home by Sherwin-Williams
Dunn-Edwards
Diamond Vogel
Hirshfield's
C2 Paint
Clare
Kompozit
Similar Glidden colors
closest in the Glidden deckThe nearest shades to Diamond Blue within Glidden's own range, ranked by perceptual color distance — useful when you want the same look a touch lighter, darker, or warmer.
Coordinated palette
Generated by hue-rotating #CFE4EE in HSL space. Pair Diamond Blue with one accent and one neutral — the swatches below are starting points, not final picks.
Accessibility (WCAG contrast)
WCAG 2.1: AA = 4.5:1 normal text · AA Large = 3:1 large text · AAA = 7:1 normal text.
Glidden Diamond Blue Equivalents at Other Brands
Matching Diamond Blue from a different paint counter? Below is the single closest color in each major US deck and how close it really is. Remember that any paint store can also custom-tint Glidden PPG1237-2 directly — these equivalents are for when you'd rather stay inside one brand's own deck.
Sherwin-Williams Equivalent of Diamond Blue
At Sherwin-Williams, the closest color to Diamond Blue is Iceberg (SW 6798) — very close at ΔE 3.36, though not an exact twin. It sits at the same lightness (LRV 76 vs 75) and carries a cool blue-green undertone; sample both side by side if the room gets strong natural light. See the full Iceberg swatch →
Behr Equivalent of Diamond Blue
The closest Behr equivalent of Diamond Blue is Soft Cloud (M520-1A). At ΔE 0.72 the two are indistinguishable on a wall — it carries the same cool blue undertone and sits at the same lightness (LRV 74 vs 75). If Behr is your counter, order Soft Cloud and you'll get the same color. See the full Soft Cloud swatch →
Benjamin Moore Equivalent of Diamond Blue
Benjamin Moore's nearest match is Mystical Blue (792), visually identical in normal room light (ΔE 1.4). It runs slightly darker (LRV 73 vs 75) and carries a cool blue-green undertone, so it substitutes for Diamond Blue without repainting risk. See the full Mystical Blue swatch →
Valspar Equivalent of Diamond Blue
The closest Valspar equivalent of Diamond Blue is Cape Cod (8002-44A). At ΔE 0.68 the two are indistinguishable on a wall — it carries the same cool blue-green undertone and sits at the same lightness (LRV 74 vs 75). If Valspar is your counter, order Cape Cod and you'll get the same color. See the full Cape Cod swatch →
PPG / Glidden Equivalent of Diamond Blue
The closest PPG / Glidden equivalent of Diamond Blue is Diamond Blue (PPG1237-2). At ΔE 0.68 the two are indistinguishable on a wall — it carries the same cool blue-green undertone and sits at the same lightness (LRV 75 vs 75). If PPG / Glidden is your counter, order Diamond Blue and you'll get the same color. See the full Diamond Blue swatch →
Dutch Boy Equivalent of Diamond Blue
Dutch Boy's nearest match is Lake Breeze (138-2DB), visually identical in normal room light (ΔE 1.67). It sits at the same lightness (LRV 76 vs 75) and carries a cool blue undertone, so it substitutes for Diamond Blue without repainting risk. See the full Lake Breeze swatch →
HGTV Home by Sherwin-Williams Equivalent of Diamond Blue
HGTV Home by Sherwin-Williams has no exact twin of Diamond Blue. The nearest is Galactic Lite (HGSW 1347) at ΔE 4.14 — close, but the difference shows next to trim and in side light. It runs slightly darker (LRV 73 vs 75). Compare large swatches before substituting. See the full Galactic Lite swatch →
Dunn-Edwards Equivalent of Diamond Blue
The closest Dunn-Edwards equivalent of Diamond Blue is Pale Frost (DE5805). At ΔE 0.47 the two are indistinguishable on a wall — it carries the same cool blue-green undertone and runs slightly darker (LRV 70 vs 75). If Dunn-Edwards is your counter, order Pale Frost and you'll get the same color. See the full Pale Frost swatch →
Diamond Vogel Equivalent of Diamond Blue
Diamond Vogel has no exact twin of Diamond Blue. The nearest is Brush Blue (0607) at ΔE 3.6 — close, but the difference shows next to trim and in side light. It sits at the same lightness (LRV 75 vs 75). Compare large swatches before substituting. See the full Brush Blue swatch →
Hirshfield's Equivalent of Diamond Blue
At Hirshfield's, the closest color to Diamond Blue is Brush Blue (0607) — very close at ΔE 3.48, though not an exact twin. It sits at the same lightness (LRV 75 vs 75) and carries a cool blue undertone; sample both side by side if the room gets strong natural light. See the full Brush Blue swatch →
C2 Paint Equivalent of Diamond Blue
At C2 Paint, the closest color to Diamond Blue is Argon (C2-771) — very close at ΔE 3.46, though not an exact twin. It sits at the same lightness (LRV 75 vs 75) and carries a cool blue undertone; sample both side by side if the room gets strong natural light. See the full Argon swatch →
Clare Equivalent of Diamond Blue
At Clare, the closest color to Diamond Blue is Frozen (PNT100-LT-56) — very close at ΔE 2.62, though not an exact twin. It sits at the same lightness (LRV 75 vs 75) and carries a cool blue-green undertone; sample both side by side if the room gets strong natural light. See the full Frozen swatch →
Kompozit Equivalent of Diamond Blue
At Kompozit, the closest color to Diamond Blue is Brush Blue (0607) — very close at ΔE 3.48, though not an exact twin. It sits at the same lightness (LRV 74 vs 75) and carries a cool blue undertone; sample both side by side if the room gets strong natural light. See the full Brush Blue swatch →