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Winsor & Newton

Winsor & Newton Cotman Watercolor Paint Set 20 Colors

  • 20 colors, 5 milliliter tubes
  • Watercolor introductory set
  • Lightfast fine art pigments
  • Ages 10 and up listed
  • 4.32 ounces set weight
  • 24 hours dry time listed

Last refreshed Sep 7, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

An introductory tube set of watercolors with a wide color spread, lightfast pigments and a list of named colors. Listing fields conflict on opacity, and the dry time listed is long.

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ASIN: B08NK1BR8BModel: 0390665Category: Art Paints

Overview

A beginner or student starting in watercolor gets a spread of tube colors here, from Chinese White and Lemon Yellow Hue to Lamp Black, in a Cotman introductory set made with fine art pigments.

The set covers yellows, reds, blues, greens, earth tones and black, so a beginner can mix many palettes from the tubes alone, and the description stresses transparency and lightfastness. The limitation is conflicting data, because the specs say opaque coverage while the description says high transparency.

Who it's for

A desk or studio table where beginners learn washes and color mixing on paper. Painters who want large tubes or a limited professional palette should check other sets.

Pros and cons

Pros
  • Wide spread of named colors
  • Fine art pigments
  • Introductory set for beginners
Cons
  • Small tube volume
  • Opacity data conflicts
  • Not water resistant
  • Long listed dry time

Performance notes

Transparent watercolor lets light reflect from the paper through the pigment, so the paper and the amount of water set the result. Tube paint is rewet with a brush and thinned as needed. Lightfast pigments resist fading under indoor light.

Specifications

BrandWinsor & Newton
Model0390665
Dimensions & fit
Item weight4.32 ounces
Capacity & performance
Item Volume5 ml
Age Range DescriptionFrom 10 years
Construction & materials
Finish TypeGloss
Color20
Other details
Paint TypeWatercolor
CoverageOpaque (specs); described as highly transparent
Water Resistance LevelNot water resistant
Indoor Outdoor UsageIndoor
Dry Time In Hours24 hours
Container TypeTube
Surface RecommendationGlass, paper, wood

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Frequently asked questions

How do I start using the Winsor & Newton Cotman set?

The listing gives no setup steps. It lists paper, wood and glass as surfaces and a 24 hour dry time, and it is aimed at ages 10 and up.

Which colors are in the Cotman 20 tube set?

The description names Chinese White, Lemon Yellow Hue, Cadmium Yellow Hue, Cadmium Orange Hue, Cadmium Red Deep Hue, Alizarin Crimson Hue, Permanent Rose, Purple Lake, Dioxazine Purple, Ultramarine, Prussian Blue, Cerulean Blue Hue, Turquoise, Emerald, Viridian Hue, Hooker's Green Light, Yellow Ochre, Burnt Sienna, Burnt Umber and Lamp Black.

Is the Cotman set waterproof?

No. The listing says waterproof is false and the water resistance level is not water resistant.

Are Cotman watercolors opaque or transparent?

The specs list opaque coverage, but the description says the paints are designed for high transparency. Test a swatch before relying on either.