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Michael Harding
Napthol Red - Michael Harding
Oil ColourPR188
PR188

Napthol Red

No. 301 · Series 3 · 40ml · 60ml · 225ml, 1L, 2.5L, 5L

Organic - Napthol Red is a well-established, organic pigment that can be used transparently or opaquely, according to choice. In an unmixed state, it is a pure and slightly fiery red with high tint power and a range of yellowy-orange undertones. These undertones become noticeable when brushed and produce much brighter and warmer pinks than are attainable with the Cadmium Reds. When mixed with white, Napthol Red will appear almost fluorescent.

Technical Summary

Napthol Red is a single-pigment Michael Harding oil colour made with PR188 (Organic).

It is semi-transparent, excellent lightfastness, average drying time, high tinting strength.

It is ground in linseed oil with high oil content.

Code
No. 301
Series
Series 3
Pigment Index
PR188
Pigment Type
Organic
Oil / Vehicle
Linseed Oil
Sizes
40ml · 60ml · 225ml, 1L, 2.5L, 5L
Lightfastness
Excellent
Opacity
Semi-Transparent
Drying
Average
Oil Content
High
Tint Power
High
Toxicity
Non-Toxic
Colour Science

Measured colour data

Loading measured pigment data…

Pigment Behaviour

Tint · Tone · Shade · Glaze

Preview how Napthol Red behaves when mixed, toned, shaded and glazed. Each swatch is computed from the masstone using a perceptual subtractive model - an approximation for guidance, not a formulation guarantee.

Masstone swatch
Masstone
L 45.17 · a 58.4 · b 43.69
7.81R 4.4/13.8

Napthol Red straight from the tube.

Undertone
#f8d8d4

A thin wash over white.

Tint
#df7367

Mixed with Titanium White.

Tone
#a6534a

Mixed with a mid neutral grey.

Shade
#7c2a23

Darkened with a chromatic black.

Glaze
#f2bbb4

A thin transparent film over white.

Mix with Napthol Red

Popular combinations

Open Napthol Red in the Virtual Mixing Studio to preview how it combines with these partners before you reach for the palette.

Open Napthol Red in Mixing Studio
Napthol Red: Questions & Answers

What pigment is used in Napthol Red?

Napthol Red is made with PR188.

Is Napthol Red a single-pigment colour?

Yes. Napthol Red uses a single pigment (PR188), so its behaviour stays consistent and predictable on the palette.

Is Napthol Red transparent or opaque?

Napthol Red is semi-transparent.

Is Napthol Red lightfast?

Napthol Red has excellent lightfastness.

Is Napthol Red vegan?

Yes. Napthol Red contains no animal-derived ingredients and is suitable for vegan artists.

Artist Reviews

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Colour Disclaimer: Colours shown on screen or in print may vary from the actual product. For the most accurate representation of colour, texture and finish, we recommend viewing a physical sample or swatch in person before making your final selection.

Product Information & Disclaimer

The information provided on this website is based on research and testing conducted by Michael Harding Art Formulas Ltd and is intended as general guidance on the characteristics and potential uses of our products in established painting practices.

While we take care to provide accurate and reliable information, individual materials, techniques, working conditions and applications can vary. Michael Harding Art Formulas Ltd cannot guarantee that any product will be suitable for every individual purpose or application. Users should carefully read all product labels, instructions and safety information and carry out appropriate testing before use, particularly when developing individual techniques or combining materials.

To the fullest extent permitted by applicable law, Michael Harding Art Formulas Ltd makes no express or implied warranties as to merchantability or fitness for a particular purpose and accepts no liability for any loss or damage, including indirect or consequential loss, arising from the use or application of its products.

Colour Representation

Colours displayed on this website and in printed materials are for guidance only. Their appearance may vary depending on screen settings, device, lighting conditions, printing processes and other factors, and may therefore differ from the appearance of the physical product.

For the most accurate representation of colour, texture and finish, we strongly recommend viewing a physical product sample or swatch in person before making a final selection or purchase. Where colour accuracy is important, please do not rely solely on digital or printed representations.

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