RAL and DB colours

A variety of design options with a wide standard range of RAL and DB colours.

RAL and DB colours for aluminium profile systems

A variety of design options with a wide standard range of RAL and DB colours.

RAL and DB colours are the most frequently used colours for coating windows, doors, curtain walls, sun protection, roller shutters or roller doors. heroal offers you more than 500 standard RAL and 20 standard DB colours for extruded profiles, for example for windows, doors, curtain walls and patio roofs. For roll-formed profiles, such as roller shutters and roller doors, heroal offers you a selection of colours. Additional shades of colour can be individually produced on demand. Not only is the well-thought-out choice of colour important for the desired effect, but also the gloss rate. It describes the directly reflected light: the higher the gloss, the more light is directly reflected. The RAL colours of heroal’s hwr powder coating are available with different gloss rates – ranging from dull mat through mat, brilliant and satin-gloss to metallic and speckled effects. Furthermore, the haptics of the surface can also be refined by a fine structure. In contrast to RAL colours, DB colours contain the effect pigment “hematite crystals” - these colours are predominantly used for steel components used for bridges or platform roofs.

What’s so special about RAL and DB colours by heroal?

Weather resistant

Highly weather resistant heroal hwr powder coatings and heroal 2-layer thick coatings prevent flaking, fading and erosion.


heroal RAL and DB colours stand out for high UV-protection. For example, the Florida test by GSB showed that heroal coatings withstood the extremely high UV-radiation and salty marine air for 36 months – without any change in the surface.

Subtlest nuances

RAL colours can be created in many different gloss rates, ranging from dull mat through brilliant to metallic – for surfaces with subtlest nuances.

Test heroal‘s variety of colours

Use our heroal colour configurator, and test the variety of colours for windows, doors, sliding doors, curtain walls or canopies and patio roofs. You can zoom in and out, or turn the aluminium surface, and explore true to detail light effects and 3D structures. Via the drop-down menu, you can choose from different colour categories and surface structures.

Coating technologies for RAL and DB colours

  • heroal hwr powder coating

    heroal hwr powder coating for windows, doors and patio roofs

    For decades, heroal has set international quality standards in the field of aluminium coating. With the best values in terms of colour stability, gloss retention, weather resistance and UV-protection, heroal hwr powder coatings meet the highest demands of Qualicoat’s class 2 and GSB’s master quality (quality seal for piecework coating) – of course, fully complying with all ecological requirements.

    Coating process:

    1. aluminium base material
    2. chromium-free passivation
    3. heroal hwr powder coating

  • heroal 2-layer thick coating

    heroal 2-layer thick coating for roll-formed roller shutter and roller door profiles

    Thanks to heroal 2-layer thick coatings, roll-formed aluminium parts, like slats for roller shutters and roller doors, are especially colour-intensive and colour-fast, as well as abrasion-proof and weather resistant. The thick coat is applied in a rolling process and then stoved at 240 °C. After the application of a clear coat, the elements are finally roll-formed. This is first class quality. Therefore, the classification society Germanischer Lloyd certified the 2-layer thick coating as suitable for being used on ships.

    Coating process:

    1. aluminium base material
    2. pre-treatment
    3. prime coat
    4. clear coat



  • What are RAL colours?

    RAL colours are clearly defined and standardised colours which can be unambiguously identified by numbers. This makes it possible to match and coordinate the colours of different construction elements and materials. The colour system is created by the German RAL gGmbH, a subsidiary of the RAL Deutsches Institut für Gütesicherung und Kennzeichnung (German Institute for Quality Assurance and Labelling). The clear identifiability of each colour facilitates the communication about colours and their adaptation to already existing elements. Therefore, RAL colours are not subject to a specific manufacturer, a paint quality (acrylic, wood lacquer etc.), an application, like inside or outside, or a coating technology.

  • How many RAL and DB colours are there?

    At present, there are 2,328 RAL-colours (as of Dec. 8, 2020) in different gloss rates. They are used world-wide.

    There is a total of 12 DB colours, which are defined by German Rail. Due to additional gradations of colour, heroal has 20 DB colours on offer. The most popular one is the colour DB 703.

    The heroal standard range offers a wide variety of more than 500 RAL and 20 DB colours. Of course, heroal systems can also be coated in many more RAL and DB colours, if required.

  • What RAL colour is DB 703?

    DB 703, referred to as dark grey or slate, is one of the most widespread DB colours used in modern construction. DB 703 also plays an important role for windows, doors and curtain walls made from aluminium. The slight metal gloss, created by the pigment “hematite crystals”, is the unique feature of all DB colours.

    DB colours can not be precisely represented in the RAL colour system. Although German Rail created a standard for these colours, they do not provide any specific samples, which may lead to deviations in colour, depending on the individual manufacturer. However, there should be no deviations when it comes to the precisely defined RAL colours, regardless of the manufacturer.

  • Are RAL colours always identical?

    RAL colours have been standardised by RAL gGmbH, and therefore should always be identical, regardless of the surface, coating quality, manufacturer and coating technology. This way, you can enjoy a uniform and harmonious colouring of different components both inside and outside your house, like PVC windows and an aluminium front door.

  • What does RAL mean?

    The abbreviation RAL originates from the former institute’s name “Reichsausschuss für Lieferbedienungen“ (National Committee for Delivery and Quality Assurance). Founded on April 23, 1925 by numerous associations and government representatives as an independent institution, it served the “… protection of economy and consumers, for trueness and clarity in labelling“. RAL Quality Assurance evolved from this institute, and set up the constantly extended colour system we know today.

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