Grey tiles: 17 greys compared by undertone, face, finish and format

Short answer: seventeen products here carry the Colour: Grey tag, and Grey tiles lists the same seventeen. They are not one family: four marble-look, three stone-look, three concrete-look, two terrazzo-look, two travertine-look, two subway tiles and one mosaic sheet. Fifteen record Porcelain in the Material row and two record Ceramic. Formats run from a 20 × 145 mm mosaic piece to 600 × 1200 mm. Only five of the seventeen pages give their grey a temperature — three say cool, two say warm — and the other twelve name a tone without naming an undertone.

1. Why seventeen, and what sits one shade along?

Seventeen is the number of products carrying the Colour: Grey tag in the site's product feed, and Grey tiles lists the same seventeen handles. The two agree exactly. The collection page sums the group up itself: "Grey is the least uniform group on the site." One shade along, Charcoal tiles holds three, each from a series that also has a grey below. Those three, and the two in Black tiles, are compared in Charcoal and black tiles: 5 compared.

2. Which greys does the page call warm, and which cool?

Five of the seventeen. Three write cool: Pietra Storm is a "cool blue-grey", Studio Cloud Wave a "cool pale grey", Quarry Ash "cool without going blue" — two different cools. Two write warm: Quarry Stone is a "mid warm-grey" and Studio Greige a "warm mid-grey subway tile with a flat gloss face". Greige appears in that product's name, not its description, and nowhere else in the range.

The other twelve name a tone and stop: "soft neutral" on Coastal Mist, "balanced mid-neutral" on Urban Mist, "stone-toned" on Coastal Stone and Pietra Dove. This guide will not supply a temperature on their behalf. A photograph can get a grey wrong easily: a white balance a few hundred kelvin out can make a cool grey read as a greige. Any undertone you read off an image is a reading of a photograph, not a recorded fact. Screens and batches shift colour; check a sample. Room light also changes what you see. A 2023 study in the Journal of Vision found that samples all named grey kept that name under a change of light while, for two of its three observers, their look shifted; averaged over all three, the shift was largest under strongly red and blue light and smallest under warm 3,000K light, though no two lights differed significantly.

3. Which greys are light, and which are dark?

Taking only the words the pages use, they sort four ways.

• Called light or pale (four): Quarry Ash ("light ash-grey"), Pietra Dove ("pale stone-toned"), Atlas Pearl ("pale pearl-grey"), Studio Cloud Wave ("cool pale grey").
• Called mid (five): Pietra Smoke, Ridge Grey, Quarry Stone, Studio Greige, Urban Mist.
• Called deep or dark (two): Pietra Shadow ("deep grey") and Ridge Slate ("dark slate look").
• No lightness word at all (six): Pietra Storm, Studio Graphite Strip, Haven Grey, Haven Pebble In/Out, Coastal Stone, Coastal Mist.

If you came looking for light grey tiles, that first group is what the pages support. Watch what "pale" is attached to: on Pietra Dove and Atlas Pearl it describes the whole face; on Pietra Shadow, Pietra Storm and Haven Grey it describes only the markings on a darker ground.

4. Which faces are figured, and which are flat?

Eleven of the seventeen name a figure, in four kinds. Veins: the four marble-look greys — crossing on Dove, Smoke and Shadow, drifting on Storm — set beside the nine whites and one beige of that family in the fourteen marble-look faces compared. Atlas Pearl adds "soft veining" and is the one page with a Faces row: eight designs, so a laid run varies rather than repeating a single face.

Aggregate: Haven Pebble In/Out is "oversized-aggregate", Haven Grey "large pale aggregate", Quarry Ash "scattered with pale aggregate"; the first two sit in Terrazzo look tiles, taken face by face in the five terrazzo-look faces. Cleft and grain: both stone-look Ridge tiles record a "rough, cleft-stone face", and Ridge Slate adds "strong directional grain", the only page here saying which way its figure runs; the six stone-look faces compared takes that further. Speckle: Studio Graphite Strip is "speckled graphite".

Five describe a quiet face instead: Studio Greige ("flat gloss face"), Coastal Stone ("composed matt finish"), Coastal Mist ("gentle variation"), Urban Mist ("restrained matt finish") and Quarry Stone, "poured stone rather than cement". Four of the five are concrete-look tiles or travertine-look; the six concrete-look faces compared covers half. The seventeenth: Studio Cloud Wave has no printed figure but a moulded one, "a rippled face", with a Profile row reading Wave. Relief makes its own shadow lines.

5. Which greys come in more than one finish?

Five pages name more than one word on the Finish line. Four use "or" — Pietra Dove, Pietra Smoke and Pietra Shadow read "Polished or matt", Pietra Storm "Honed or polished" — and one uses a slash: Haven Pebble In/Out reads "Matt / rough". Since 5 October 2026 each of the five lets you choose between the two on the product page, and the order is placed for the finish you choose.

The other twelve name one face. Across all seventeen the lines read matt on seven pages, gloss on three and rough on two, plus those five. The three gloss pages — the two subway tiles and the mosaic — are the only glazed faces here; those two subway tiles are also the only greys recording Ceramic. The other fifteen, the four marble-look pages among them, record Porcelain.

6. What formats are recorded, and which one is a sheet?

Sixteen record a face size: 600 × 600 mm on fourteen of them, 300 × 600 mm on seven, 600 × 1200 mm on three, 75 × 300 mm on two. Ten of the sixteen name two formats, and since 5 October 2026 those pages let you choose the format before ordering. Thickness reads 10 mm on fourteen pages, 8 mm on the two subway tiles and 7 mm on the mosaic sheet.

The seventeenth records no face size. Studio Graphite Strip Mosaic Tile has a Sheet size of 296 × 299 mm and a Piece size of 20 × 145 mm, because a mosaic arrives as a sheet of small pieces. That 20 mm strip is the smallest recorded dimension in the group; the marble-look 600 × 1200 mm is the largest. It is also the only grey mosaic: Mosaic tiles holds twelve sheets and the other eleven are filed white.

7. Which greys sit next to which whites?

The seventeen come from eight name-series; four of those also carry a white, which makes them the easiest pairs to reason about: same series, different colour row.

• Studio. Studio Cloud Wave (grey, Profile: Wave) and Studio Wave (white, Profile: Wave) are one rippled 75 × 300 mm face in two colour rows, and Studio Crest Wave adds a wave edge; Studio Greige's flat face has Studio Chalk and Studio Linen in white.
• Atlas. Atlas Pearl and Atlas Frost, with Atlas Ivory in beige between them.
• Haven. Haven Grey and Haven Pebble In/Out beside Haven White and Haven Fine White.
• Pietra. Four greys against nine whites in one family.

Ridge and Urban go the other way, their greys next to Ridge Charcoal and Urban Graphite in Charcoal tiles; Coastal and Quarry carry no white at all. Two cautions. The whites are not one colour either: White tiles holds twenty-nine, and two white tiles that look the same works through the rows that separate two candidates. And a grey and a white from different series were never drawn as a pair — the pages record nothing about how any two look together. The twenty-nine whites are taken the same eight questions at a time in White tiles: 29 whites compared.

8. How do you check a grey in your own light?

All seventeen carry a Sample piece option beside the main purchase unit (Sheet on the one mosaic, Standard on the rest), and a sample in your own light is where a grey is best judged. A grey carries little colour of its own, so the cast of the light and surfaces near it, a globe, a south-facing window, a timber vanity, can show in it.

Three things to do with it. Look at it flat and upright: matt and gloss behave differently once vertical. Look at it at the two or three times of day you will see it. If you are choosing between two, hold them together rather than one after the other; the eye compares side by side far better than it remembers. Tile samples explains how ordering works and how to compare samples at home covers what to write down; if grout is in the decision, a dried sample joint against a chart is the same problem one scale down. What no sample settles is the batch: every page states that production batches can vary.

Questions people ask

What are grey bathroom tiles?

As a colour question, the seventeen above, sorted in section 3 by what the pages call them. As a placement question it is not answerable from a shop page: where a tile may be laid is settled by your installer or specifier, and nothing here says where any tile belongs.

Which is the lightest grey here?

By the pages' own words, Quarry Ash is the only one called light; Pietra Dove, Atlas Pearl and Studio Cloud Wave are called pale. Beyond those four the record does not rank them.

Are there any grey mosaic tiles?

One: Studio Graphite Strip Mosaic Tile, a 296 × 299 mm sheet of 20 × 145 mm strips. The other eleven sheets in Mosaic tiles are white.

Where these facts come from

The Studio pairs in section 7 were corrected on 30 September 2026, the Material and Thickness counts were updated on 1 October 2026 from supplier documentation, and Pietra Storm's finish row on 4 October 2026. Every count above was produced on 15 September 2026 by a script that read the product feed at /products.json, cross-checked it against Grey tiles, then read the seventeen product pages in turn: the Size, Sheet size, Piece size, Thickness, Finish, Faces and Profile rows, the Product type and Material rows in the specifications panel, and the opening description sentence. Colour words in quotation marks are the product page's own wording, copied as written; anything outside quotation marks describes a photograph and nothing more. Nothing here is a performance claim or a statement of where a tile belongs. Supplier documentation changes, so read the page on the day you order, and confirm the specification your project needs with the responsible installer.

References

Morimoto, T., Yamauchi, Y. and Uchikawa, K. (2023). Invariant categorical color regions across illuminant change coincide with focal colors. Journal of Vision, 23(2), 7. doi.org/10.1167/jov.23.2.7

The research paper cited here is open access under a CC BY 4.0 licence and is summarised, not quoted.

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