Raw materials
Choosing the raw materials for the Designer Gouache range of colours requires years of knowledge and expertise from our chemists. We select materials from thousands of sources across the globe to ensure that we have the highest quality to make the most superior formulations. Once accepted as a Winsor & Newton ingredient each raw material is subjected to scrupulous quality control checks at the time of delivery to ensure they meet with our high standards before the manufacturing process can begin.
Formulation
Good quality gouache colour is a combination of pigment and gum arabic. Gum arabic is the binder that holds the pigment, giving it that perfect creamy 'flowing' consistency. (NB some cheaper brands may have chalk added to the pigment which in turn effects the 'flow and the brilliance of colour').
Every colour within the range has an individual formulation to take advantage of each and every pigment characteristic and ensure tube stability.
We call upon the expertise of our chemists who have many years of experience to develop formulations using the excellent raw materials sourced, we utilise our state of the art manufacturing techniques to deliver colour that is the best available – our Designers Gouache colours are more commonly chosen than any other gouache range.
Pigments
Pigments are sourced from many different places, some are natural products - notably the earths (umbers, Ochre’s etc); some are from metal compounds and are often referred to as ‘traditional’ or ‘genuine’ (cadmiums, cobalt’s, titanium) and there is an ever growing range of organic pigments available as a result of the distillation of petroleum, these are often termed ‘modern’. In total there are 45 different pigments used in the Designers Gouache range.
Within the Designers Gouache range there are many single pigment colours in order to provide the widest handling properties and maintain clean mixing. We always try to use single pigments wherever possible as they are purer in hue and cleaner in colour than mixtures of pigments. This provides a larger number of colour mixes before resulting in muddy colours. This is of most interest to the fine artists.
In addition to the single pigment colours there are the other colours that are produced using specific mixtures of pigments. These are equally important as we understand that it is difficult if not impossible to consistently mix some colours by hand and time consuming if you are doing so when painting. By Winsor & Newton mixing these colours in the manufacturing process the artist is saving time and colour otherwise wasted on incorrect mixing. As an opaque medium it is also more difficult to obtain a complete spectrum with single pigments because many are naturally more transparent. We therefore provide these mixed colours to ensure the widest spectrum without compromising brilliance and opacity.
Pigment Strength
It is widely misunderstood that Gouache is opaque as a result of adding chalk or other such materials. The opaque colours within the Winsor & Newton Designers Gouache range are opaque due to the exceptionally high levels of pigmentation in the formulation, which results in unsurpassed covering power and clean colour mixing. A number of colours now have increased pigment strength.
One of the main reasons artists choose Winsor & Newton is our colour spectrum. The Designers Gouache range offers a wide and balanced spectrum of 82 tube colours (4 additional colours in pots). These colours have been chosen according to mass tone (colour from tube), colour bias (undertone), colour strength and relative opacity. The range includes bright colours for designers and more lightfast ones for fine artists. The resultant colour range ensures that all artists can obtain the palette which best suits their work, and also that all colours can be safely intermixed.
As a result of the recent review there are now also a number of unique ultra bright colours such as Opera Pink and Opera Rose.
Opera Pink and Opera Rose
Opacity
All the Designers Gouache colours are more opaque than Artists' Water Colours. However, the degree to which they cover does vary. The relative opacity of the colours is marked on the colour chart; the transparent colours are marked with or T and the opaque colours are marked with or O. When overpainting in layers, the relative ‘staining' (bleeding) properties of the colours are indicated on the colour chart.
Transparent | Semi-Transparent | Semi-Opaque | Opaque |
Bleeding/Staining Colours
When overpainting in layers, the relative ‘staining' (bleeding) properties of the colours are also indicated on the colour chart. (see also Layering colour in Hints and Tips)
Series
Due to the wide range of pigments used in the range it is necessary to use a series system. The series indicates the relative price of the colour and is determined mainly by the cost of the pigment. Designers Gouache has four series with Series 1 being the least expensive and Series 4 the most expensive.
Permanence
Designers Gouache has the same ratings as the other Winsor & Newton artists' quality ranges. AA and A rated colours are recommended as permanent for fine artists. Some of the brighter, Designers' Gouache colours within the range are only available as B or C rated. This is because in certain areas of the spectrum, particularly magenta, pigments are not available to achieve permanence as well as brightness and opacity.
As the designer's original art work is unlikely to be required after reproduction, brightness takes priority. However we strive to deliver the best possible lightfastness we can and have recently been able to improve some of our colours to A ratings.
Covering power
The covering power of the Winsor & Newton Designers Gouache colour range is unsurpassed due to its high pigment content. The natural attribute of each of the pigments will also add to the level of opacity which further contributes to covering power.
Brilliance of Colour
The brilliance of colour achieved with the Designers Gouache range is stunning, every colour is bold and vibrant as a result of the meticulous toil that goes in to selecting the pigments, the quality of those pigments and concentration of the pigment in the colour.
Even Flow
Designers Gouache is renowned for its smooth even flow, it glides across grounds resulting in a flat non streaky finish.
Gouache should not be applied too thickly as it may crack.
Matt Finish
As a result of the high level of pigmentation Winsor & Newton Designers Gouache dries to a matt finish. This reduces the reflection when photographing the work.
Drying times
One of the natural attributes of gum arabic - the binder used in Designers Gouache is that it is quick drying. This faster drying allows quick working techniques and preliminary sketching to be done. Also as with water colour, work can be finished quickly and as a result travelling with work is made much easier.
Metallic Colours Gold and Silver are available in 14ml tubes and 30ml pots within the Designers' Gouache range, however the formulations differ slightly. The gold and silver formulations used in the pots are metallic based, whereas the tube formulations use mica based pigments which have a metallic sheen but contain no metal. The pot colour is a little more fluid and generally stronger and more opaque. The tube colours will not tarnish.