
Napthol Red
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.
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
Measured colour data
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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.

Napthol Red straight from the tube.
A thin wash over white.
Mixed with Titanium White.
Mixed with a mid neutral grey.
Darkened with a chromatic black.
A thin transparent film over white.
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 StudioWhat 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.
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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.

