Paint pigment selection depends on: (1) end-use exposure (indoor / outdoor / marine), (2) binder system (waterborne / solvent-borne / powder / 2K), (3) required lightfastness (Blue Wool 4-8), (4) chemical resistance needs, (5) regulatory compliance (REACH, RoHS, food contact). This guide maps these requirements to recommended grades.
Paint formulators work across very different application contexts — interior latex, exterior architectural, industrial maintenance, automotive refinish, marine, powder. Each has distinct pigment requirements. This guide provides a strategic framework for picking the right grade for each segment.
By paint segment
Interior architectural paint (waterborne acrylic)
Lightfastness Blue Wool 4-6 acceptable (limited UV exposure). Waterborne acrylic binder is dominant. Pigments need surface treatment for clean dispersion in waterborne emulsions and stability through 18-24 month paint shelf life.
Recommended: PY74, PY83 (yellow), PR48:2, PR112 (red), PB15:3 surface-treated (blue), PG7 (green), iron oxides for earth tones, carbon black, TiO2 for white base. Cost-optimized palette.
Exterior architectural paint
Blue Wool 6-7 minimum for 5-year warranty. Premium exterior brands target Blue Wool 7-8 for 10-year warranty. Both waterborne and solvent-borne (alkyd) used.
Recommended: PY154 (premium yellow), PY83 (workhorse yellow), PR122 (premium red), PR112 (workhorse red), PB15:3 (cyan), PG7 (green), iron oxides. Avoid standard PY3, PY12 azo for exterior — they fade visibly within 1-2 years.
Industrial maintenance coatings
Heavy-duty coatings for steel structures, machinery, storage tanks. Often 2K (two-component) epoxy or polyurethane. Need chemical resistance, abrasion resistance, and Blue Wool 6+ lightfastness for typically 5-10 year service life.
Recommended: PY154, PR122, PR254, PB15:3, PG7, PBk31 (premium chromatic black). Iron oxides for primers. All compatible with epoxy and PU 2K systems.
Automotive refinish
Aftermarket repair painting. Must color-match OEM color cards (ΔE less than 0.5) and last 10+ years outdoor. Strict performance requirements. Premium pricing accepted.
Recommended: Full premium palette — PY154, PY110, PY139, PR122, PR202, PR209, PR254, PR264, PB15:4 non-flocculating, PB60 indanthrone, PG7, PG36, plus effect pigments (aluminum, mica pearls). Validation under multiple illuminants critical for OEM color match.
Marine paints (anti-fouling, hull, deck)
Constant saltwater + UV exposure. Need Blue Wool 7-8, salt-spray resistance, and compatibility with biocidal additives in anti-fouling formulations. Typical: epoxy primer + polyurethane topcoat + anti-fouling.
Recommended: PR101 iron oxide reds (extreme alkali stability), PY42 iron oxide yellow, PB15:3, PG7, PR254 for premium reds. Avoid pigments with metal salts that interfere with anti-fouling biocides.
Powder coatings
Dry powder applied electrostatically, cured at 180-220°C. Used for architectural aluminum, appliances, automotive parts, racking. Need ultra-fine particles, heat-stable through cure.
Recommended: Ultra-fine (d50 less than 1 micron) variants of PY154, PY155, PY83, PR122, PR202, PR254, PB15:3, PG7, PG36. Specifically labeled powder-coating grades from supplier — generic versions cause flow problems and gloss reduction.
Strategic palette consolidation
Most paint companies can serve their full segment range with 12-18 base pigments. Adding more rarely improves color match capability — it just increases inventory cost and supplier management complexity. Strategic consolidation: pick the highest-performing grade in each color/chemistry that satisfies your most demanding segment, then use the same grade across all lower-demanding segments. PY154 works for exterior architectural AND interior latex (overspec but cost-justified by inventory simplification).
Need help applying this to your specific application?
Our technical sales team works directly with formulators every day. Free 50-100g samples shipped within 2-3 business days.
About the Author
Bhargav Kanani is the Sales Director at Kanani Dyes Chem LLP, an ISO 9001/14001/45001/17025 certified manufacturer of organic pigments based in Gujarat, India. With deep expertise in pigment chemistry, manufacturing, and global B2B trade, he advises formulators across paints, coatings, plastics, inks, and specialty applications worldwide.