Indigo
PBK6—Carbon / Gas Black. Synthetic (channel/gas black). A dense, very lightfast carbon black; slower drying than lamp black.
PB15.3—Phthalocyanine Blue (green shade). Synthetic organic. A stabilised green-shade phthalo blue; very strong and permanent.
PV19—Synthetic organic - quinacridone (violet crystal form). No Old Master could paint a permanent violet - quinacridone violet is a 20th-century gift, letting painters build luminous purples that will not fade. A modern, permanent violet - transparent and strong, ideal for glazes and lively tints.
Indigo is a multi-pigment Michael Harding watercolour made with PBk6, PB15.3, PV19.
It is transparent, good lightfastness, granulating, medium staining power, tinting strength 3.
- Code
- W150
- Series
- Series 1
- Pigment Index
- PBk6, PB15.3, PV19
- Contents
- 15ml tube
- Lightfastness
- Good
- Transparency
- Transparent
- Tint Power
- 3
- Granulation
- YES
- Staining Power
- Medium
Measured colour data
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Tint · Tone · Shade · Glaze
Preview how Indigo 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.
Indigo 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.
Compare with nearby colours
See Indigo side-by-side with its closest neighbours in the range — chemistry, opacity and lightfastness at a glance.
Popular combinations
Open Indigo in the Virtual Mixing Studio to preview how it combines with these partners before you reach for the palette.
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What pigment is used in Indigo?
Indigo is made with PBk6, PB15.3, PV19.
Is Indigo a single-pigment colour?
No. Indigo is a blend of 3 pigments (PBK6, PB15.3, PV19), formulated to give a specific hue.
Is Indigo transparent or opaque?
Indigo is transparent.
Is Indigo lightfast?
Indigo has good lightfastness.
Does Indigo granulate?
In watercolour, Indigo is granulating.
Does Indigo stain the paper?
Indigo has medium staining power.
Is Indigo 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.