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Michael Harding
Phthalo Blue Red Shade - Michael Harding
WatercolourPB15.1
PB15.1

Phthalo Blue Red Shade

W139 · Series 1
WATERCOLOUR
Series 1
Phthalo Blue Red Shade No. W139

Pigment HistoryPB15.1—Phthalocyanine Blue (red shade). Synthetic organic. A red-shade crystalline form of phthalo blue; the most common artist grade.

Technical Summary

Phthalo Blue Red Shade is a single-pigment Michael Harding watercolour made with PB15.1.

It is transparent, excellent lightfastness, granulating, high staining power, tinting strength 4.

Code
W139
Series
Series 1
Pigment Index
PB15.1
Contents
15ml tube
Lightfastness
Excellent
Transparency
Transparent
Tint Power
4
Granulation
YES
Staining Power
High
Safety Data Sheets →
PB15.1 · Pigment History →
Colour Science

Measured colour data

Loading measured pigment data…

Pigment Behaviour

Tint · Tone · Shade · Glaze

Preview how Phthalo Blue Red Shade 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 27.72 · a 14.71 · b -40.49
7.76PB 2.8/9.3

Phthalo Blue Red Shade straight from the tube.

Undertone
#c4d6ef

A thin wash over white.

Tint
#476ebb

Mixed with Titanium White.

Tone
#325088

Mixed with a mid neutral grey.

Shade
#10275f

Darkened with a chromatic black.

Glaze
#9cb8e2

A thin transparent film over white.

Compare Phthalo Blue Red Shade

Compare with nearby colours

See Phthalo Blue Red Shade side-by-side with its closest neighbours in the range — chemistry, opacity and lightfastness at a glance.

Indanthrone BlueW215Phthalocyanine Blue LakeW137Prussian BlueW112
Mix with Phthalo Blue Red Shade

Popular combinations

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

Cadmium Yellow Lemon→ green rangeCadmium Red Light→ violet rangeBurnt Umber→ neutral / earth range
Open Phthalo Blue Red Shade in Mixing Studio
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Phthalo Blue Red Shade

Available from 112 verified stockists worldwide

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Phthalo Blue Red Shade: Questions & Answers

What pigment is used in Phthalo Blue Red Shade?

Phthalo Blue Red Shade is made with PB15.1.

Is Phthalo Blue Red Shade a single-pigment colour?

Yes. Phthalo Blue Red Shade uses a single pigment (PB15.1), so its behaviour stays consistent and predictable on the palette.

Is Phthalo Blue Red Shade transparent or opaque?

Phthalo Blue Red Shade is transparent.

Is Phthalo Blue Red Shade lightfast?

Phthalo Blue Red Shade has excellent lightfastness.

Does Phthalo Blue Red Shade granulate?

In watercolour, Phthalo Blue Red Shade is granulating.

Does Phthalo Blue Red Shade stain the paper?

Phthalo Blue Red Shade has high staining power.

Is Phthalo Blue Red Shade vegan?

No. Michael Harding watercolours contain a small amount of honey, so the finished paint is not vegan.

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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.

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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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