High-performance indigo blue – stable, insoluble, and suitable for a variety of substrates

Indigo Blue solves the need for a classic, durable vat dye that provides bright, stable blue shades. It is used for textile dyeing of cotton, linen, silk, wool, and blends – especially denim – as well as leather coloring, ink & pigment, paper, and wood. It works through reduction‑dyeing‑oxidation‑washing steps at 60–70°C, delivering consistent, aesthetic results.

What Makes It Attractive & Different?

Unlike many synthetic blue dyes that may fade or lack authenticity, Indigo Blue is a time‑tested vat dye with a unique chemical structure (C₁₆H₁₀N₂O₂, CAS 482‑89‑3). It is insoluble in water and stable under normal conditions, offering excellent performance in denim and other applications. Its deep blue to purple‑black powder form ensures high color strength and reproducibility.

Why Buy Ours Instead of Others?

Our Indigo Blue is manufactured under ISO 9001, 14001, and 45001, and complies with ZDHC MRSL v3.1 (Level 3), aligned with OEKO‑TEX® , and suitable for GOTS processing. With 12‑month shelf life, packaging options (200g sample, 25kg bags), and clear safety guidance, you get a compliant, reliable, and globally accepted product.

Indigo Blue is a classic vat dye appearing as a dark blue to purple-black powder. It is insoluble in water and stable under normal conditions. 

The dyeing process follows: reduction → dyeing → oxidation → washing → after‑treatment at typical temperature 60–70°C. Shelf life is 12 months when stored in cool, dry conditions. 

Packaging: 200 g sample packs and 25 kg bags. Indigo Blue is manufactured under ISO 9001, 14001, 45001, complies with ZDHC MRSL v3.1 Level 3, aligns with OEKO‑TEX®, and is suitable for GOTS processing .