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COLORSTEEL colours

New Denim BlueThe one blue in the range.

New Denim Blue is a deep, calm blue, and it's the only blue on NZ Steel's current list of 24 COLORSTEEL colours. It's made in the Classic finish. With a TSR of 24% it reflects about the same share of the sun's heat as the charcoals, so expect a warm roof.

We don't show this colour on screen because screens get it wrong. Ask a roofer or supplier for a sample sheet.
Cooler (reflects more sun)Hotter

Reflects 24% of the sun's heat (total solar reflectance, NZ Steel figure).

Updated 28 October 2026 · Written by the Find My Roofer team · How we check our facts

What does New Denim Blue look like on a house?

NZ Steel calls it a deep, calming blue that sits as easily on traditional homes as contemporary ones. Its LRV is 11%, so from the street it reads dark rather than bright.

Blue is a bolder call than grey. In our view it works when something else picks it up: white weatherboards, natural timber, or a seaside spot where the water does the matching.

Before you commit to a blue roof

  • Get a real sample sheet. NZ Steel says its on-screen colours vary from the actual product
  • Look at it outside on a clear day and again on an overcast one
  • Hold it beside your cladding and front door, standing on the ground
  • Settle the spouting (gutters), fascia and flashing colours at the same time

How warm does a blue roof run?

The higher a colour's TSR, the more heat it reflects and the cooler the roof stays. At 24%, this blue sits with the darker colours, a long way below a white like Cloud at 69%. If you're re-roofing, look at roof insulation and underlay at the same time.

Near the sea or in a geothermal area

Like every COLORSTEEL colour, New Denim Blue is made in MAXAM and ALTIMATE. Within 100 metres of saltwater, NZ Steel asks you to contact COLORSTEEL to confirm the warranty, and it wants the same call from anyone building near geothermal activity. Leave the product choice to your roofer and NZ Steel.

Our take

If you keep coming back to blue, go for it, but get certainty first. Prop a sample sheet against the house for a week and look at it from the footpath each day. We're an independent referral service with no tie to New Zealand Steel, and when you're ready we'll pass the job to one checked roofer.

Want a roofer to take a look?

Tell us the job and your postcode. We match it with a Find My Roofer certified roofer who specialises in that kind of work, and they call you to quote. Your number goes to them alone.

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Questions

Straight answers.

Is there a lighter blue in COLORSTEEL?
Not on NZ Steel's current colour selector. If New Denim Blue feels too strong, look at softer options such as Mist Green or Gull Grey.
Will a blue roof fade?
NZ Steel treats even fading and chalking as normal wear and tear, while its paint warranty covers flaking, peeling and excessive fade. Ask your roofer for the warranty document for your site.

Where this information comes from

Every fact and rule on this page comes from the sources above, checked on the dates shown. How we write and check these pages.

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