Stone Watercolor Paint — Phthalo Blue
A beautifully concentrated cool blue made for our Stone line. Phthalo Blue is one half of our balanced blue pair and mixes with Ultramarine Blue to create a clear, vibrant True Blue. Ideal for early‑grade watercolor work, color stories, and exploring warm–cool relationships.
Made in the USA
Produced for our Stone line using high‑quality pigments and a clean, reliable liquid base ideal for Waldorf watercolor painting.
Concentrated Formula
Stone Watercolor Paint is extremely concentrated.
We recommend diluting 10 parts water to 1 part paint for general painting.
For veil painting, use more water and allow layers to dry between washes.
For richer, more vibrant color, use less water.
Color Mixing
To create balanced primaries, mix the warm and cool versions of each hue.
Ultramarine Blue + Phthalo Blue = True Blue — a wonderful exercise in color exploration.
Non‑Toxic
Conforms to ASTM D‑4236.
Sizes
• Phthalo Blue — 1 oz (28.4 ml)
SPB1 — $9.95
• Phthalo Blue — 4 oz (113.6 ml)
SPB4 — $27.95
• Phthalo Blue — 8 oz (227.3 ml)
SPB8 — $45.95
